Mistralopen weightsMistral Small 4 pricing
$0.15 per 1M input tokens and $0.60 per 1M output tokens. In real work that is 0.08¢ per chat answer and 0.33¢ to summarize a 20-page PDF.
Official price at Mistral AI: $0.15 / $0.60 per 1M (source, checked Oct 11, 2026).
What Mistral Small 4 costs per task
Token counts estimated from a measured model of the same lab (Mistral Large 4), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 0.08¢$0.83 / 1,000 | 40 in · 523 out · 854 reasoning | 89 of 336 | estimated |
| Reply to a customer email | 0.22¢$2.17 / 1,000 | 254 in · 599 out · 2,946 reasoning | 237 of 336 | estimated |
| Write a 1,500-word blog post | 0.47¢$4.67 / 1,000 | 55 in · 2,064 out · 5,705 reasoning | 122 of 336 | estimated |
| Write 10 product descriptions | 0.19¢$1.89 / 1,000 | 285 in · 849 out · 2,230 reasoning | 66 of 336 | estimated |
| Translate 1,000 words | 0.75¢$7.48 / 1,000 | 1,349 in · 1,317 out · 10,816 reasoning | 171 of 336 | estimated |
| Proofread one page (500 words) | 0.26¢$2.59 / 1,000 | 731 in · 860 out · 3,281 reasoning | 174 of 336 | estimated |
| Summarize a 20-page PDF | 0.33¢$3.31 / 1,000 | 13,373 in · 151 out · 2,019 reasoning | 98 of 336 | estimated |
| Extract data from an invoice | 0.16¢$1.65 / 1,000 | 374 in · 871 out · 1,784 reasoning | 138 of 336 | estimated |
| Analyze a 200-row spreadsheet | 0.71¢$7.14 / 1,000 | 4,774 in · 4,526 out · 6,174 reasoning | 86 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 0.25¢$2.48 / 1,000 | 3,772 in · 210 out · 2,981 reasoning | 110 of 336 | estimated |
| Classify 100 support tickets | 0.46¢$4.63 / 1,000 | 1,274 in · 832 out · 6,565 reasoning | 135 of 336 | estimated |
| Review 500 lines of code | 0.62¢$6.17 / 1,000 | 4,658 in · 1,594 out · 7,522 reasoning | 100 of 336 | estimated |
| Write a SQL query | 0.19¢$1.91 / 1,000 | 121 in · 511 out · 2,647 reasoning | 150 of 336 | estimated |
| Run a 50-step coding agent | 13¢$135 / 1,000 | 2,304,625 in · 15,450 out · 132,350 reasoning | 72 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving Mistral Small 4 through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
Mistralunknown | $0.15 / $0.60 | $0.015 | 262K | 100% |
Mistralunknown | $0.15 / $0.60 | $0.015 | 262K | 100% |
Mistralunknown | $0.17 / $0.66 | $0.017 | 262K | 100% |
Mistralunknown | $0.17 / $0.66 | $0.017 | 262K | 100% |
Price history
First seen in our price history on Mar 23, 2026 at $0.15 input / $0.60 output. The list price has not changed since.
FAQ
How much does Mistral Small 4 cost?
Mistral Small 4 costs $0.15 per 1 million input tokens and $0.60 per 1 million output tokens, with cached input at $0.015 (list price on Oct 18, 2026). In practice one chat answer costs about 0.08¢ and summarizing a 20-page PDF about 0.33¢.
Where is Mistral Small 4 cheapest?
Among 4 providers we track, the lowest list price today is at Mistral: $0.15 input and $0.60 output per 1M tokens.
Does Mistral Small 4 charge for reasoning tokens?
Yes. Reasoning (thinking) tokens are billed as output tokens. That is why the cost per task can be much higher than the visible answer suggests - our task costs include them.
Is the Mistral Small 4 cost per task measured or estimated?
Estimated: Mistral Small 4 was not run directly. Tokens come from Mistral Large 4 and are rescaled by the tokenizer of Mistral. Real usage can differ.