Home / Tasks / Reply to a customer email

How much does it cost to write a customer email reply with AI?

Q: How much does it cost to write a customer email reply with AI?

On Oct 18, 2026 it costs from <0.01¢ with GLM 5.3 Flash to 4.2¢ with Kimi K3 among popular models. The median of 336 models is 0.10¢ per task.

Q: What is the cheapest AI to write a customer email reply?

The cheapest model overall is Summarize at <0.01¢; the cheapest popular model is GLM 5.3 Flash at <0.01¢. The best value among popular models (cheap and highly rated) is Claude Opus 5.5 at 0.79¢.

Q: Why do reasoning models cost more for the same task?

Reasoning (thinking) tokens are billed as output tokens even though you never see them. On some tasks a model thinks for thousands of tokens before a short answer, which can multiply the cost.

Q: How is the cost calculated?

A support agent reply to a 200-word customer complaint. We send the same prompt (197 words of input) to every measured model through OpenRouter with default settings and record the input, output and reasoning tokens it uses.

Between <0.01¢ (GLM 5.3 Flash) and 4.2¢ (Kimi K3) among popular models. The median across all 336 models is 0.10¢.

Cheapest popular<0.01¢

Median0.10¢

Priciest popular4.2¢

1,000 tasks, cheapest$0.06

1,000 tasks, median$0.97

Models priced336

Full ranking: 336 models

Sorted by cost. Click a column to sort by quality or tokens.

#	Model	Cost per task	Text score	Tokens in / out	Basis
1	S SummarizeScaledown	<0.01¢$0.01 / 1,000	-	326 / 685	estimated
2	S ExtractScaledown	<0.01¢$0.01 / 1,000	-	326 / 685	estimated
3	gpt-oss-20bOpenAI	<0.01¢$0.02 / 1,000	1317	258 / 126	estimated best value
4	S Llama 3 8B LunarisSao10K	<0.01¢$0.05 / 1,000	-	326 / 685	estimated
5	I Ling 3.0 FlashInclusionai	<0.01¢$0.05 / 1,000	-	325 / 684	estimated
6	gpt-oss-safeguard-20bOpenAI	<0.01¢$0.06 / 1,000	-	258 / 126	estimated
7	GPT-5 NanoOpenAI	<0.01¢$0.06 / 1,000	1338	258 / 126	estimated best value
8	GPT-4.1 NanoOpenAI	<0.01¢$0.06 / 1,000	1322	258 / 94	estimated
9	GLM 5.3 FlashZ.ai	<0.01¢$0.06 / 1,000	1474	265 / 258	measured best value
10	Gemma 3 4BGoogle	<0.01¢$0.07 / 1,000	1303	271 / 552	estimated
11	Llama 3.1 8B InstructMeta	<0.01¢$0.07 / 1,000	1211	323 / 684	estimated
12	GPT-6 Luna ProOpenAI	<0.01¢$0.07 / 1,000	-	258 / 94	estimated
13	GPT-6 LunaOpenAI	<0.01¢$0.07 / 1,000	1443	258 / 94	measured
14	Muse Spark 1.3 ContributorMeta	<0.01¢$0.08 / 1,000	-	265 / 258	estimated
15	Muse Spark 1.2 ContributorMeta	<0.01¢$0.08 / 1,000	-	265 / 258	estimated
16	R Reka Flash 3Rekaai	<0.01¢$0.08 / 1,000	-	265 / 258	estimated
17	Granite 4.0 MicroIBM	<0.01¢$0.08 / 1,000	-	323 / 684	estimated
18	GPT-4o-miniOpenAI	<0.01¢$0.10 / 1,000	-	258 / 94	estimated
19	GPT-4o-mini (2024-07-18)OpenAI	<0.01¢$0.10 / 1,000	1318	258 / 94	estimated
20	Gemma 3 12BGoogle	<0.01¢$0.10 / 1,000	1342	271 / 552	estimated
21	Qwen3.7 FlashAlibaba Qwen	<0.01¢$0.10 / 1,000	-	326 / 685	estimated
22	R Reka EdgeRekaai	0.01¢$0.10 / 1,000	-	323 / 684	estimated
23	G MythoMax 13BGryphe	0.01¢$0.10 / 1,000	-	326 / 685	estimated
24	P Laguna XS 2.1Poolside	0.01¢$0.10 / 1,000	-	332 / 686	estimated
25	Step 3.5 FlashStepFun	0.01¢$0.10 / 1,000	1393	264 / 257	estimated
26	Nova Micro 1.0Amazon	0.01¢$0.11 / 1,000	-	316 / 682	estimated
27	I Schematron V2 TurboInference Net	0.01¢$0.11 / 1,000	-	326 / 685	estimated
28	Mistral NemoMistral	0.01¢$0.11 / 1,000	-	254 / 3,545	estimated
29	gpt-oss-120bOpenAI	0.01¢$0.11 / 1,000	1352	258 / 126	estimated
30	Command R7B (12-2024)Cohere	0.01¢$0.11 / 1,000	-	321 / 683	estimated
31	Phi 4Microsoft	0.01¢$0.12 / 1,000	1256	323 / 684	estimated
32	GLM 4.7 FlashZ.ai	0.01¢$0.12 / 1,000	1364	265 / 258	estimated
33	Qwen3.5-9BAlibaba Qwen	0.01¢$0.14 / 1,000	-	326 / 685	estimated
34	Hy-MT2-1.8BTencent	0.01¢$0.14 / 1,000	-	326 / 685	estimated
35	Gemma 4 26B A4B Google	0.01¢$0.14 / 1,000	1438	271 / 552	estimated
36	I Ling 3.0 Flash VLInclusionai	0.01¢$0.14 / 1,000	-	325 / 684	estimated
37	Llama 3.2 1B InstructMeta	0.01¢$0.15 / 1,000	1111	323 / 684	estimated
38	P Laguna S 2.1Poolside	0.02¢$0.15 / 1,000	-	332 / 686	estimated
39	Nemotron 3.5 LightningNVIDIA	0.02¢$0.16 / 1,000	1351	328 / 685	estimated
40	GPT-5.6 Luna ProOpenAI	0.02¢$0.16 / 1,000	-	258 / 94	estimated
41	GPT-5.6 LunaOpenAI	0.02¢$0.16 / 1,000	1453	258 / 94	estimated
42	GPT-5.4 NanoOpenAI	0.02¢$0.17 / 1,000	1401	258 / 94	estimated
43	UI-TARS 7B ByteDance	0.02¢$0.17 / 1,000	-	323 / 684	estimated
44	Qwen2.5 7B InstructAlibaba Qwen	0.02¢$0.17 / 1,000	-	326 / 685	estimated
45	I Schematron V2 SmallInference Net	0.02¢$0.17 / 1,000	-	326 / 685	estimated
46	I Ling 3.1 FlashInclusionai	0.02¢$0.18 / 1,000	-	325 / 684	estimated
47	Llama Guard 4 12BMeta	0.02¢$0.18 / 1,000	-	323 / 684	estimated
48	Nova Lite 1.0Amazon	0.02¢$0.18 / 1,000	1260	316 / 682	estimated
49	Nemotron 3 Nano 30B A3BNVIDIA	0.02¢$0.18 / 1,000	1314	328 / 685	estimated
50	LFM2.5-24B-A2BLiquid AI	0.02¢$0.19 / 1,000	-	265 / 258	estimated
51	Qwen3.5-FlashAlibaba Qwen	0.02¢$0.20 / 1,000	1396	326 / 685	estimated
52	Nemotron 3.5 Content SafetyNVIDIA	0.02¢$0.20 / 1,000	-	328 / 685	estimated
53	Qwen3 14BAlibaba Qwen	0.02¢$0.20 / 1,000	-	326 / 685	estimated
54	N Nex-N2.5-MiniNex Agi	0.02¢$0.20 / 1,000	-	279 / 1,974	estimated
55	Qwen3 Coder 30B A3B InstructAlibaba Qwen	0.02¢$0.21 / 1,000	-	326 / 685	estimated
56	Gemma 3 27BGoogle	0.02¢$0.21 / 1,000	1366	271 / 552	estimated
57	Qwen3 32BAlibaba Qwen	0.02¢$0.22 / 1,000	1347	326 / 685	estimated
58	U Solar Pro 4Upstage	0.02¢$0.22 / 1,000	1386	259 / 554	estimated
59	Hy-MT2-30B-A3BTencent	0.02¢$0.23 / 1,000	-	326 / 685	estimated
60	Hy-MT2-7BTencent	0.02¢$0.23 / 1,000	-	326 / 685	estimated
61	Seed 1.6 FlashByteDance Seed	0.02¢$0.23 / 1,000	-	326 / 685	estimated
62	Qwen3 30B A3B Instruct 2507Alibaba Qwen	0.02¢$0.23 / 1,000	1382	326 / 685	estimated
63	MiMo-V2.6-FlashXiaomi	0.02¢$0.24 / 1,000	1451	323 / 684	estimated
64	MiMo-V2.5Xiaomi	0.02¢$0.24 / 1,000	1434	323 / 684	estimated
65	Llama 4 ScoutMeta	0.02¢$0.24 / 1,000	1322	323 / 684	estimated
66	Llama 3.2 3B InstructMeta	0.02¢$0.24 / 1,000	1167	323 / 684	estimated
67	Gemini 2.5 Flash LiteGoogle	0.02¢$0.25 / 1,000	1375	271 / 552	estimated
68	Seed-2.0-MiniByteDance Seed	0.02¢$0.25 / 1,000	-	263 / 557	estimated
69	Llama 3.3 70B InstructMeta	0.03¢$0.25 / 1,000	1318	323 / 684	estimated
70	GPT-4.1 MiniOpenAI	0.03¢$0.25 / 1,000	1383	258 / 94	estimated
71	GLM 4.5 AirZ.ai	0.03¢$0.25 / 1,000	1373	265 / 258	estimated
72	A Trinity Large ThinkingArcee AI	0.03¢$0.26 / 1,000	1367	253 / 248	estimated
73	GPT-3.5 TurboOpenAI	0.03¢$0.27 / 1,000	-	258 / 94	estimated
74	Nemotron 3 SuperNVIDIA	0.03¢$0.27 / 1,000	1360	265 / 559	estimated
75	Gemma 4 31BGoogle	0.03¢$0.28 / 1,000	1452	271 / 552	estimated
76	Mistral Small 3Mistral	0.03¢$0.30 / 1,000	1274	254 / 3,545	estimated
77	P Ternary Bonsai 2 27BPrism Ml	0.03¢$0.30 / 1,000	-	263 / 556	estimated
78	DeepSeek V4.1 FlashDeepSeek	0.03¢$0.30 / 1,000	1475	279 / 1,974	measured best value
79	I Mercury 2.5Inception	0.03¢$0.31 / 1,000	-	271 / 1,967	estimated
80	Nemotron 3.5 Super VLNVIDIA	0.03¢$0.31 / 1,000	-	328 / 685	estimated
81	GLM 4.6VZ.ai	0.03¢$0.31 / 1,000	1378	265 / 258	estimated
82	GPT-5.1-Codex-MiniOpenAI	0.03¢$0.32 / 1,000	-	258 / 126	estimated
83	GPT-5 MiniOpenAI	0.03¢$0.32 / 1,000	1390	258 / 126	estimated
84	Claude Haiku 5.5Anthropic	0.04¢$0.35 / 1,000	-	362 / 636	measured
85	Qwen3.8 Omni FlashAlibaba Qwen	0.04¢$0.37 / 1,000	-	326 / 685	estimated
86	Qwen3.8 FlashAlibaba Qwen	0.04¢$0.37 / 1,000	-	326 / 685	measured
87	U Solar Pro 3Upstage	0.04¢$0.37 / 1,000	-	259 / 554	estimated
88	Ministral 3 3B 2512Mistral	0.04¢$0.38 / 1,000	-	254 / 3,545	estimated
89	Qwen3 30B A3BAlibaba Qwen	0.04¢$0.38 / 1,000	1327	326 / 685	estimated
90	Hy3Tencent	0.04¢$0.38 / 1,000	1453	362 / 636	estimated
91	DeepSeek V4 Flash 0423DeepSeek	0.04¢$0.38 / 1,000	1439	279 / 1,974	estimated
92	Qwen2.5 72B InstructAlibaba Qwen	0.04¢$0.39 / 1,000	1303	326 / 685	estimated
93	Llama 3.1 70B InstructMeta	0.04¢$0.40 / 1,000	1293	323 / 684	estimated
94	T UnslopNemo 12BThedrummer	0.04¢$0.41 / 1,000	-	328 / 685	estimated
95	Qwen3 235B A22B Instruct 2507Alibaba Qwen	0.04¢$0.41 / 1,000	1422	326 / 685	estimated
96	U Solar Mini 4Upstage	0.04¢$0.41 / 1,000	-	277 / 1,973	estimated
97	GLM 5.3 FlashXZ.ai	0.04¢$0.42 / 1,000	-	265 / 258	estimated
98	Hunyuan A13B InstructTencent	0.04¢$0.44 / 1,000	-	326 / 685	estimated
99	T Cydonia 24B V4.1Thedrummer	0.04¢$0.44 / 1,000	-	328 / 685	estimated
100	GPT-3.5 Turbo (older v0613)OpenAI	0.04¢$0.45 / 1,000	-	258 / 94	estimated
101	Hy3 previewTencent	0.04¢$0.45 / 1,000	1409	362 / 636	estimated
102	Command R (08-2024)Cohere	0.05¢$0.46 / 1,000	1250	321 / 683	estimated
103	Qwen3 VL 30B A3B InstructAlibaba Qwen	0.05¢$0.46 / 1,000	-	326 / 685	estimated
104	I Mercury 2Inception	0.05¢$0.47 / 1,000	1343	253 / 549	estimated
105	C UncensoredCognitivecomputations	0.05¢$0.49 / 1,000	-	427 / 453	estimated
106	Llama 4 MaverickMeta	0.05¢$0.51 / 1,000	1327	323 / 684	estimated
107	Granite 4.2 8BIBM	0.05¢$0.51 / 1,000	1290	279 / 1,974	estimated
108	N Nex-N2.5-ProNex Agi	0.05¢$0.51 / 1,000	-	279 / 1,974	estimated
109	Gemma 2 27BGoogle	0.05¢$0.54 / 1,000	1290	271 / 552	estimated
110	MiniMax M2.5MiniMax	0.05¢$0.54 / 1,000	1391	417 / 447	estimated
111	U ReMM SLERP 13BUndi95	0.06¢$0.56 / 1,000	-	326 / 685	estimated
112	MiniMax M2MiniMax	0.06¢$0.56 / 1,000	1343	417 / 447	estimated
113	Ministral 3 8B 2512Mistral	0.06¢$0.57 / 1,000	-	254 / 3,545	estimated
114	MiMo-V2.6-ProXiaomi	0.06¢$0.57 / 1,000	1479	420 / 449	estimated best value
115	MiMo-V2.5-ProXiaomi	0.06¢$0.57 / 1,000	1467	420 / 449	estimated
116	GPT-3.5 Turbo InstructOpenAI	0.06¢$0.57 / 1,000	-	258 / 94	estimated
117	MiniMax-01MiniMax	0.06¢$0.58 / 1,000	-	417 / 447	estimated
118	Qwen3 Coder NextAlibaba Qwen	0.06¢$0.59 / 1,000	-	326 / 685	estimated
119	Qwen3 VL 8B InstructAlibaba Qwen	0.06¢$0.60 / 1,000	-	326 / 685	estimated
120	T Skyfall 36B V2Thedrummer	0.06¢$0.60 / 1,000	-	427 / 453	estimated
121	GPT-5.4 MiniOpenAI	0.06¢$0.62 / 1,000	1447	258 / 94	estimated
122	Qwen-PlusAlibaba Qwen	0.06¢$0.62 / 1,000	-	326 / 685	estimated
123	DeepSeek V4 Flash 0731DeepSeek	0.06¢$0.62 / 1,000	-	279 / 1,974	estimated
124	GLM 4.5VZ.ai	0.06¢$0.62 / 1,000	1352	265 / 258	estimated
125	WizardLM-2 8x22BMicrosoft	0.06¢$0.62 / 1,000	-	323 / 684	estimated
126	M Weaver (alpha)Mancer	0.06¢$0.64 / 1,000	-	326 / 685	estimated
127	GLM 4.6Z.ai	0.06¢$0.65 / 1,000	1424	265 / 258	estimated
128	GLM 4.7Z.ai	0.07¢$0.65 / 1,000	1441	265 / 258	estimated
129	MiniMax M3MiniMax	0.07¢$0.66 / 1,000	1441	417 / 447	measured
130	MiniMax M2.7MiniMax	0.07¢$0.66 / 1,000	1415	417 / 447	estimated
131	MiniMax M2-herMiniMax	0.07¢$0.66 / 1,000	-	417 / 447	estimated
132	MiniMax M2.1MiniMax	0.07¢$0.66 / 1,000	1384	417 / 447	estimated
133	M LongCat 2.0Meituan	0.07¢$0.66 / 1,000	-	420 / 449	estimated
134	Step 3.7 FlashStepFun	0.07¢$0.69 / 1,000	-	275 / 554	estimated
135	N Hermes 3 70B InstructNous Research	0.07¢$0.70 / 1,000	-	323 / 684	estimated
136	S Llama 3.3 Euryale 70BSao10K	0.07¢$0.73 / 1,000	-	326 / 685	estimated
137	GLM 4.5Z.ai	0.07¢$0.73 / 1,000	1411	265 / 258	estimated
138	Qwen3 Coder FlashAlibaba Qwen	0.07¢$0.73 / 1,000	-	326 / 685	estimated
139	Qwen3.6 35B A3BAlibaba Qwen	0.07¢$0.73 / 1,000	-	326 / 685	estimated
140	Qwen3.5-35B-A3BAlibaba Qwen	0.07¢$0.73 / 1,000	1394	326 / 685	estimated
141	S Llama 3.1 Euryale 70B v2.2Sao10K	0.07¢$0.73 / 1,000	-	417 / 447	estimated
142	P Perceptron Mk1Perceptron	0.07¢$0.74 / 1,000	-	423 / 450	estimated
143	Muse Glimmer 30BMeta	0.07¢$0.74 / 1,000	-	271 / 552	estimated
144	Ministral 3 14B 2512Mistral	0.08¢$0.76 / 1,000	-	254 / 3,545	estimated
145	Qwen3 VL 30B A3B ThinkingAlibaba Qwen	0.08¢$0.78 / 1,000	-	326 / 685	estimated
146	Qwen3 Next 80B A3B InstructAlibaba Qwen	0.08¢$0.78 / 1,000	1398	326 / 685	estimated
147	Qwen3 Coder 480B A35BAlibaba Qwen	0.08¢$0.78 / 1,000	1388	326 / 685	estimated
148	GLM 5.2Z.ai	0.08¢$0.79 / 1,000	1476	265 / 258	estimated
149	Command A+Cohere	0.08¢$0.80 / 1,000	-	418 / 447	estimated
150	Qwen3.6 FlashAlibaba Qwen	0.08¢$0.83 / 1,000	-	326 / 685	estimated
151	o4 Mini HighOpenAI	0.08¢$0.84 / 1,000	-	258 / 126	estimated
152	o4 MiniOpenAI	0.08¢$0.84 / 1,000	1391	258 / 126	estimated
153	o3 Mini HighOpenAI	0.08¢$0.84 / 1,000	1364	258 / 126	estimated
154	o3 MiniOpenAI	0.08¢$0.84 / 1,000	1348	258 / 126	estimated
155	SonarPerplexity	0.09¢$0.86 / 1,000	-	417 / 447	estimated
156	N Hermes 3 405B InstructNous Research	0.09¢$0.87 / 1,000	-	420 / 449	estimated
157	Qwen3 Next 80B A3B ThinkingAlibaba Qwen	0.09¢$0.87 / 1,000	1369	326 / 685	estimated
158	M Morph V3 FastMorph	0.09¢$0.88 / 1,000	-	423 / 450	estimated
159	DeepSeek V4 Pro 0423DeepSeek	0.09¢$0.88 / 1,000	1458	279 / 1,974	estimated
160	DeepSeek V3.2 ExpDeepSeek	0.09¢$0.88 / 1,000	1425	279 / 1,974	estimated
161	Gemini 3.1 Flash LiteGoogle	0.09¢$0.90 / 1,000	-	271 / 552	estimated
162	Gemini 3.1 Flash Lite PreviewGoogle	0.09¢$0.90 / 1,000	1433	271 / 552	estimated
163	Qwen2.5 Coder 32B InstructAlibaba Qwen	0.09¢$0.90 / 1,000	1271	326 / 685	estimated
164	DeepSeek V3.2DeepSeek	0.09¢$0.91 / 1,000	1425	279 / 1,974	estimated
165	Mistral Small 3.2 24BMistral	0.09¢$0.91 / 1,000	1356	254 / 3,545	estimated
166	R Relace Apply 3Relace	0.09¢$0.91 / 1,000	-	417 / 447	estimated
167	Qwen2.5 VL 72B InstructAlibaba Qwen	0.09¢$0.95 / 1,000	-	326 / 685	estimated
168	A Aion 3.5 MiniAion Labs	0.10¢$0.97 / 1,000	-	276 / 554	estimated
169	A Aion-3.0-MiniAion Labs	0.10¢$0.97 / 1,000	-	276 / 554	estimated
170	Qwen3.7 PlusAlibaba Qwen	0.10¢$0.98 / 1,000	1456	326 / 685	estimated
171	Seed 1.6ByteDance Seed	0.10¢$1.01 / 1,000	-	424 / 451	estimated
172	GLM 5.1Z.ai	0.10¢$1.04 / 1,000	1465	265 / 258	estimated
173	A Aion-RP 1.0 (8B)Aion Labs	0.11¢$1.05 / 1,000	-	420 / 449	estimated
174	Voxtral Small 24B 2507Mistral	0.11¢$1.09 / 1,000	-	254 / 3,545	estimated
175	GLM 5Z.ai	0.11¢$1.09 / 1,000	1457	265 / 258	estimated
176	A Aion-2.0Aion Labs	0.11¢$1.11 / 1,000	-	276 / 554	estimated
177	Qwen3.5 Plus 2026-02-15Alibaba Qwen	0.12¢$1.15 / 1,000	-	326 / 685	estimated
178	MiniMax M1MiniMax	0.12¢$1.21 / 1,000	1364	417 / 447	estimated
179	DeepSeek V4.1 Flash 1017DeepSeek	0.12¢$1.23 / 1,000	-	279 / 1,974	estimated
180	Nova 2 LiteAmazon	0.12¢$1.23 / 1,000	1335	411 / 443	estimated
181	M Morph V3 LargeMorph	0.12¢$1.24 / 1,000	-	423 / 450	estimated
182	M Moondream 3 PreviewMoondream	0.12¢$1.24 / 1,000	-	417 / 447	estimated
183	M Moondream 3.1Moondream	0.12¢$1.24 / 1,000	-	417 / 447	estimated
184	GLM 5.3Z.ai	0.13¢$1.26 / 1,000	1478	265 / 258	estimated
185	GPT-5.1OpenAI	0.13¢$1.26 / 1,000	1456	258 / 94	estimated
186	GPT-3.5 Turbo 16kOpenAI	0.13¢$1.28 / 1,000	-	258 / 126	estimated
187	Kimi K2 0711Moonshot AI	0.13¢$1.28 / 1,000	1418	424 / 451	estimated
188	Qwen3.5 Plus 2026-04-20Alibaba Qwen	0.13¢$1.33 / 1,000	-	326 / 685	estimated
189	DeepSeek V4 Flash Vision ExpDeepSeek	0.13¢$1.34 / 1,000	-	279 / 1,974	estimated
190	Seed 2.1 TurboByteDance Seed	0.13¢$1.34 / 1,000	-	424 / 451	estimated
191	Kimi K2.5Moonshot AI	0.13¢$1.34 / 1,000	1450	424 / 451	estimated
192	GLM 5V TurboZ.ai	0.14¢$1.35 / 1,000	1434	265 / 258	estimated
193	GLM 5 TurboZ.ai	0.14¢$1.35 / 1,000	-	265 / 258	estimated
194	Qwen3 VL 235B A22B InstructAlibaba Qwen	0.14¢$1.37 / 1,000	1413	326 / 685	estimated
195	Kimi K2 0905Moonshot AI	0.14¢$1.38 / 1,000	1419	424 / 451	estimated
196	Qwen3.6 PlusAlibaba Qwen	0.14¢$1.44 / 1,000	1443	326 / 685	estimated
197	Qwen3.6 27BAlibaba Qwen	0.15¢$1.45 / 1,000	-	326 / 685	estimated
198	GPT-6 Sol ProOpenAI	0.15¢$1.46 / 1,000	-	258 / 94	estimated
199	GPT-6 SolOpenAI	0.15¢$1.46 / 1,000	1459	258 / 94	estimated
200	Gemini 3.5 Flash LiteGoogle	0.15¢$1.46 / 1,000	1455	271 / 552	estimated
201	Gemini 2.5 FlashGoogle	0.15¢$1.46 / 1,000	1409	271 / 552	estimated
202	Qwen3.5-122B-A10BAlibaba Qwen	0.15¢$1.51 / 1,000	1416	326 / 685	estimated
203	o3OpenAI	0.15¢$1.52 / 1,000	1432	258 / 126	estimated
204	GPT-4.1OpenAI	0.15¢$1.52 / 1,000	1415	258 / 126	estimated
205	Kimi K2 ThinkingMoonshot AI	0.16¢$1.55 / 1,000	-	279 / 555	estimated
206	GPT-5.1-Codex-MaxOpenAI	0.16¢$1.58 / 1,000	-	258 / 126	estimated
207	GPT-5.1-CodexOpenAI	0.16¢$1.58 / 1,000	-	258 / 126	estimated
208	GPT-5OpenAI	0.16¢$1.58 / 1,000	1435	258 / 126	estimated
209	Qwen3.8 27BAlibaba Qwen	0.16¢$1.59 / 1,000	1438	326 / 685	estimated
210	E GlimpseElorian	0.16¢$1.59 / 1,000	-	417 / 447	estimated
211	GPT-5.6 Terra ProOpenAI	0.16¢$1.64 / 1,000	-	258 / 94	estimated
212	GPT-5.6 TerraOpenAI	0.16¢$1.64 / 1,000	1466	258 / 94	estimated
213	Nova Pro 1.0Amazon	0.17¢$1.75 / 1,000	1290	411 / 443	estimated
214	R Relace SearchRelace	0.18¢$1.76 / 1,000	-	417 / 447	estimated
215	N Hermes 4 405BNous Research	0.18¢$1.77 / 1,000	-	420 / 449	estimated
216	GPT-5.3-CodexOpenAI	0.18¢$1.77 / 1,000	-	258 / 94	estimated
217	GPT-5.2OpenAI	0.18¢$1.77 / 1,000	1437	258 / 94	estimated
218	U Pareto 26.10Unbiased	0.18¢$1.77 / 1,000	-	418 / 448	estimated
219	Step 5 PreviewStepFun	0.18¢$1.77 / 1,000	1447	275 / 554	estimated
220	GPT-6.1 Sol ProOpenAI	0.18¢$1.78 / 1,000	-	258 / 126	estimated
221	GPT-6.1 SolOpenAI	0.18¢$1.78 / 1,000	1484	258 / 126	measured best value
222	Gemini 3 Flash PreviewGoogle	0.18¢$1.79 / 1,000	1473	271 / 552	estimated
223	Kimi K2.6Moonshot AI	0.18¢$1.81 / 1,000	1461	424 / 451	estimated
224	DeepSeek V3DeepSeek	0.18¢$1.85 / 1,000	1358	279 / 1,974	estimated
225	Qwen3.5-27BAlibaba Qwen	0.19¢$1.87 / 1,000	1409	326 / 685	estimated
226	GPT-4o (2024-11-20)OpenAI	0.19¢$1.91 / 1,000	-	258 / 126	estimated
227	GPT-4o (2024-08-06)OpenAI	0.19¢$1.91 / 1,000	1336	258 / 126	estimated
228	GPT-4oOpenAI	0.19¢$1.91 / 1,000	-	258 / 126	estimated
229	R Beam 1.0 501B A23BReflection	0.19¢$1.93 / 1,000	-	271 / 552	estimated
230	DeepSeek V3.1DeepSeek	0.19¢$1.95 / 1,000	1417	279 / 1,974	estimated
231	Claude Haiku 4.5Anthropic	0.20¢$1.99 / 1,000	1414	362 / 325	estimated
232	Kimi K2.7 CodeMoonshot AI	0.20¢$2.05 / 1,000	-	279 / 555	estimated
233	DeepSeek V3.1 TerminusDeepSeek	0.20¢$2.05 / 1,000	1416	279 / 1,974	estimated
234	GPT-5.4OpenAI	0.21¢$2.06 / 1,000	1475	258 / 94	estimated
235	Mistral Small 3.1 24BMistral	0.21¢$2.06 / 1,000	1303	254 / 3,545	estimated
236	Grok Build 0.1xAI	0.21¢$2.15 / 1,000	-	1,492 / 328	estimated
237	Mistral Small 4Mistral	0.22¢$2.17 / 1,000	-	254 / 3,545	estimated
238	SabaMistral	0.22¢$2.18 / 1,000	-	254 / 3,545	estimated
239	GPT-5.2-CodexOpenAI	0.22¢$2.22 / 1,000	-	258 / 126	estimated
240	GPT-5.2 ChatOpenAI	0.22¢$2.22 / 1,000	1476	258 / 126	estimated
241	Gemini 3.7 FlashGoogle	0.23¢$2.27 / 1,000	1488	271 / 552	estimated best value
242	Gemini 3.6 FlashGoogle	0.23¢$2.27 / 1,000	1483	271 / 552	estimated
243	DeepSeek V3 0324DeepSeek	0.23¢$2.33 / 1,000	1395	279 / 1,974	estimated
244	Gemini 3.8 FlashGoogle	0.25¢$2.50 / 1,000	1496	271 / 552	measured best value
245	Qwen3 235B A22B Thinking 2507Alibaba Qwen	0.25¢$2.54 / 1,000	1400	326 / 685	estimated
246	Qwen3.5 397B A17BAlibaba Qwen	0.26¢$2.63 / 1,000	1442	326 / 685	estimated
247	Muse Spark OpenMeta	0.27¢$2.68 / 1,000	-	271 / 552	estimated
248	Muse Spark 1.3Meta	0.27¢$2.68 / 1,000	1494	271 / 552	estimated
249	Muse Spark 1.2Meta	0.27¢$2.68 / 1,000	1493	271 / 552	estimated
250	Muse Spark 1.1Meta	0.27¢$2.68 / 1,000	1490	271 / 552	estimated
251	Grok 4.3xAI	0.27¢$2.69 / 1,000	1442	1,492 / 328	estimated
252	Grok 4.20 Multi-AgentxAI	0.27¢$2.69 / 1,000	-	1,492 / 328	estimated
253	Grok 4.20xAI	0.27¢$2.69 / 1,000	-	1,492 / 328	estimated
254	GPT-5.6 Sol ProOpenAI	0.29¢$2.91 / 1,000	-	258 / 94	estimated
255	GPT-5.6 SolOpenAI	0.29¢$2.91 / 1,000	1485	258 / 94	estimated
256	W Palmyra X5Writer	0.29¢$2.95 / 1,000	-	420 / 449	estimated
257	GLM 5.3 PrimeZ.ai	0.30¢$3.01 / 1,000	-	265 / 258	estimated
258	GPT-4o (2024-05-13)OpenAI	0.32¢$3.18 / 1,000	1346	258 / 126	estimated
259	Codestral 2508Mistral	0.33¢$3.27 / 1,000	-	254 / 3,545	estimated
260	A Magnum v4 72BAnthracite Org	0.33¢$3.30 / 1,000	-	420 / 449	estimated
261	Sonar Reasoning ProPerplexity	0.33¢$3.32 / 1,000	-	362 / 325	estimated
262	Sonar Deep ResearchPerplexity	0.33¢$3.32 / 1,000	-	362 / 325	estimated
263	Qwen3.7 MaxAlibaba Qwen	0.35¢$3.51 / 1,000	1474	326 / 685	estimated
264	Claude Sonnet 5.5Anthropic	0.40¢$3.97 / 1,000	1475	362 / 325	measured
265	DeepSeek V4 Pro 0813DeepSeek	0.41¢$4.09 / 1,000	-	279 / 1,974	estimated
266	GPT-5.5OpenAI	0.41¢$4.11 / 1,000	1481	258 / 94	estimated
267	T Inkling SmallThinkingmachines	0.43¢$4.34 / 1,000	1404	246 / 3,528	estimated
268	R1 0528DeepSeek	0.44¢$4.38 / 1,000	1421	279 / 1,974	estimated
269	U Pareto 26.9Unbiased	0.44¢$4.41 / 1,000	-	418 / 448	estimated
270	Qwen3.8 Max (0902)Alibaba Qwen	0.48¢$4.76 / 1,000	1482	326 / 685	estimated
271	Qwen3.8 2.4T A95BAlibaba Qwen	0.48¢$4.76 / 1,000	-	326 / 685	estimated
272	Grok 4.7xAI	0.50¢$4.95 / 1,000	1444	1,492 / 328	measured
273	S Fugu MaxSakana	0.50¢$4.95 / 1,000	-	1,492 / 328	estimated
274	Grok 4.6xAI	0.50¢$4.95 / 1,000	1454	1,492 / 328	estimated
275	Grok 4.5xAI	0.50¢$4.95 / 1,000	1466	1,492 / 328	estimated
276	GPT Chat LatestOpenAI	0.51¢$5.07 / 1,000	-	258 / 126	estimated
277	R1DeepSeek	0.51¢$5.13 / 1,000	1398	279 / 1,974	estimated
278	P Perceptron Mk1.5Perceptron	0.53¢$5.34 / 1,000	-	248 / 3,532	estimated
279	Mistral Large 3 2512Mistral	0.54¢$5.44 / 1,000	1414	254 / 3,545	estimated
280	Command ACohere	0.55¢$5.51 / 1,000	1354	418 / 447	estimated
281	Command R+ (08-2024)Cohere	0.55¢$5.51 / 1,000	1276	418 / 447	estimated
282	MiMo-V2.6-Pro-UltraSpeedXiaomi	0.57¢$5.73 / 1,000	-	420 / 449	estimated
283	Claude Sonnet 4.5Anthropic	0.60¢$5.96 / 1,000	1455	362 / 325	estimated
284	A Aion 3.5Aion Labs	0.61¢$6.09 / 1,000	-	1,390 / 320	estimated
285	A Aion-3.0Aion Labs	0.61¢$6.09 / 1,000	-	1,390 / 320	estimated
286	GPT-4 TurboOpenAI	0.64¢$6.36 / 1,000	1324	258 / 126	estimated
287	Nova Premier 1.0Amazon	0.66¢$6.56 / 1,000	-	411 / 443	estimated
288	Claude Sonnet 5Anthropic	0.71¢$7.08 / 1,000	1461	362 / 636	estimated
289	Seed-2.0-LiteByteDance Seed	0.71¢$7.13 / 1,000	-	249 / 3,533	estimated
290	Devstral 2 2512Mistral	0.72¢$7.19 / 1,000	-	254 / 3,545	estimated
291	Mistral Medium 3.1Mistral	0.72¢$7.19 / 1,000	1408	254 / 3,545	estimated
292	Mistral Medium 3Mistral	0.72¢$7.19 / 1,000	1387	254 / 3,545	estimated
293	Gemini 3.5 FlashGoogle	0.73¢$7.29 / 1,000	1478	271 / 765	estimated
294	Mistral Large 4Mistral	0.76¢$7.58 / 1,000	1432	254 / 3,545	measured
295	Claude Opus 5.5Anthropic	0.79¢$7.95 / 1,000	1508	362 / 325	estimated best value
296	Sonar ProPerplexity	0.80¢$7.96 / 1,000	-	417 / 447	estimated
297	Gemini 2.5 ProGoogle	0.80¢$7.99 / 1,000	1445	271 / 765	estimated
298	Gemini 2.5 Pro Preview 06-05Google	0.80¢$7.99 / 1,000	-	271 / 765	estimated
299	Gemini 4 ArgonGoogle	0.82¢$8.19 / 1,000	1524	271 / 765	estimated best value
300	Nemotron 3 UltraNVIDIA	0.86¢$8.64 / 1,000	1426	251 / 3,538	estimated
301	GPT-6 AstraOpenAI	0.89¢$8.88 / 1,000	1477	258 / 126	estimated
302	GPT-6 Astra ProOpenAI	0.89¢$8.88 / 1,000	-	258 / 126	estimated
303	Hy4 previewTencent	0.91¢$9.08 / 1,000	-	254 / 3,545	estimated
304	Qwen3.8 Max PrimeAlibaba Qwen	0.95¢$9.52 / 1,000	-	326 / 685	estimated
305	Gemini 3.1 Pro Preview Custom ToolsGoogle	0.97¢$9.72 / 1,000	-	271 / 765	estimated
306	Gemini 3.1 Pro PreviewGoogle	0.97¢$9.72 / 1,000	1487	271 / 765	measured
307	Claude Opus 4.5Anthropic	0.99¢$9.93 / 1,000	1470	362 / 325	estimated
308	Claude Sonnet 4.6Anthropic	1.1¢$10.63 / 1,000	1472	362 / 636	estimated
309	Seed-2.0-CodeByteDance Seed	1.1¢$10.72 / 1,000	-	249 / 3,533	estimated
310	o1OpenAI	1.1¢$11.43 / 1,000	1402	258 / 126	estimated
311	Sonar Pro SearchPerplexity	1.2¢$12.29 / 1,000	-	271 / 765	estimated
312	S Sakana NamazuSakana	1.4¢$14.42 / 1,000	-	254 / 3,545	estimated
313	T InklingThinkingmachines	1.5¢$14.53 / 1,000	1441	246 / 3,528	estimated
314	o3 ProOpenAI	1.5¢$15.24 / 1,000	-	258 / 126	estimated
315	GPT-4OpenAI	1.5¢$15.30 / 1,000	1288	258 / 126	estimated
316	Muse WonderMeta	1.6¢$16.38 / 1,000	1509	271 / 765	estimated
317	Claude Opus 5Anthropic	1.8¢$17.71 / 1,000	1490	362 / 636	estimated
318	Claude Opus 4.8Anthropic	1.8¢$17.71 / 1,000	1482	362 / 636	estimated
319	Claude Opus 4.7Anthropic	1.8¢$17.71 / 1,000	1501	362 / 636	estimated
320	Claude Opus 4.6Anthropic	1.8¢$17.71 / 1,000	1503	362 / 636	estimated
321	GPT-5 ProOpenAI	1.9¢$18.99 / 1,000	-	258 / 126	estimated
322	Claude Fable 5.1Anthropic	2.0¢$19.87 / 1,000	1502	362 / 325	estimated
323	Claude Fable 5Anthropic	2.0¢$19.87 / 1,000	1504	362 / 325	estimated
324	Mistral Large 2407Mistral	2.2¢$21.78 / 1,000	1314	254 / 3,545	estimated
325	Mixtral 8x22B InstructMistral	2.2¢$21.78 / 1,000	-	254 / 3,545	estimated
326	Mistral LargeMistral	2.2¢$21.78 / 1,000	-	254 / 3,545	estimated
327	S Fugu Ultra v2Sakana	2.4¢$24.30 / 1,000	-	271 / 765	estimated
328	S Fugu UltraSakana	2.4¢$24.30 / 1,000	-	271 / 765	estimated
329	GPT-5.2 ProOpenAI	2.7¢$26.59 / 1,000	-	258 / 126	estimated
330	Mistral Medium 3.5Mistral	2.7¢$26.97 / 1,000	1426	254 / 3,545	estimated
331	Claude Opus 4.1Anthropic	3.0¢$29.81 / 1,000	1448	362 / 325	estimated
332	GPT-5.5 ProOpenAI	3.0¢$30.42 / 1,000	-	258 / 126	estimated
333	GPT-5.4 ProOpenAI	3.0¢$30.42 / 1,000	-	258 / 126	estimated
334	Kimi K3Moonshot AI	4.2¢$42.25 / 1,000	1487	249 / 3,533	estimated
335	F Ember-1Fireworks	5.4¢$53.74 / 1,000	-	249 / 3,533	estimated
336	o1-proOpenAI	11¢$114 / 1,000	-	258 / 126	estimated

Showing 100 of 336 models.

How the price is spread

Number of models per price band (log scale). Most models cluster in a narrow band; a few frontier and reasoning-heavy models cost 100x more.

FAQ

How much does it cost to write a customer email reply with AI?

On Oct 18, 2026 it costs from <0.01¢ with GLM 5.3 Flash to 4.2¢ with Kimi K3 among popular models. The median of 336 models is 0.10¢ per task.

What is the cheapest AI to write a customer email reply?

The cheapest model overall is Summarize at <0.01¢; the cheapest popular model is GLM 5.3 Flash at <0.01¢. The best value among popular models (cheap and highly rated) is Claude Opus 5.5 at 0.79¢.

Why do reasoning models cost more for the same task?

Reasoning (thinking) tokens are billed as output tokens even though you never see them. On some tasks a model thinks for thousands of tokens before a short answer, which can multiply the cost.

How is the cost calculated?

A support agent reply to a 200-word customer complaint. We send the same prompt (197 words of input) to every measured model through OpenRouter with default settings and record the input, output and reasoning tokens it uses.