Z.aireasoningGLM 5.3 Prime pricing
$2.80 per 1M input tokens and $8.80 per 1M output tokens. In real work that is 1.6¢ per chat answer and 5.2¢ to summarize a 20-page PDF.
What GLM 5.3 Prime costs per task
Token counts estimated from a measured model of the same lab (GLM 5.3 Flash), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 1.6¢$15.82 / 1,000 | 48 in · 391 out · 1,391 reasoning | 293 of 336 | estimated |
| Reply to a customer email | 0.30¢$3.01 / 1,000 | 265 in · 234 out · 24 reasoning | 257 of 336 | estimated |
| Write a 1,500-word blog post | 6.1¢$61.10 / 1,000 | 62 in · 2,174 out · 4,749 reasoning | 304 of 336 | estimated |
| Write 10 product descriptions | 6.3¢$62.77 / 1,000 | 289 in · 1,101 out · 5,940 reasoning | 310 of 336 | estimated |
| Translate 1,000 words | 9.3¢$93.09 / 1,000 | 1,330 in · 1,394 out · 8,761 reasoning | 317 of 336 | estimated |
| Proofread one page (500 words) | 0.91¢$9.06 / 1,000 | 730 in · 642 out · 155 reasoning | 260 of 336 | estimated |
| Summarize a 20-page PDF | 5.2¢$52.35 / 1,000 | 12,995 in · 544 out · 1,270 reasoning | 302 of 336 | estimated |
| Extract data from an invoice | 1.0¢$10.17 / 1,000 | 391 in · 455 out · 576 reasoning | 278 of 336 | estimated |
| Analyze a 200-row spreadsheet | ≥15¢$155 / 1,000 | 4,900 in · 0 out · 16,000 reasoning | 296 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 2.8¢$27.74 / 1,000 | 3,714 in · 274 out · 1,697 reasoning | 299 of 336 | estimated |
| Classify 100 support tickets | 7.3¢$72.68 / 1,000 | 1,281 in · 441 out · 7,411 reasoning | 319 of 336 | estimated |
| Review 500 lines of code | ≥15¢$153 / 1,000 | 4,532 in · 2 out · 15,998 reasoning | 304 of 336 | estimated |
| Write a SQL query | 1.4¢$14.40 / 1,000 | 128 in · 473 out · 1,123 reasoning | 291 of 336 | estimated |
| Run a 50-step coding agent | $1.82$1,823 / 1,000 | 2,239,737 in · 15,014 out · 28,800 reasoning | 278 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving GLM 5.3 Prime through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
 Alibabaunknown | $2.80 / $8.80 | $0.56 | 1M | 100% |
Price history
First seen in our price history on Sep 29, 2026 at $2.80 input / $8.80 output. The list price has not changed since.
FAQ
How much does GLM 5.3 Prime cost?
GLM 5.3 Prime costs $2.80 per 1 million input tokens and $8.80 per 1 million output tokens, with cached input at $0.56 (list price on Oct 18, 2026). In practice one chat answer costs about 1.6¢ and summarizing a 20-page PDF about 5.2¢.
Where is GLM 5.3 Prime cheapest?
Among 1 providers we track, the lowest list price today is at Alibaba: $2.80 input and $8.80 output per 1M tokens.
Does GLM 5.3 Prime 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 GLM 5.3 Prime cost per task measured or estimated?
Estimated: GLM 5.3 Prime was not run directly. Tokens come from GLM 5.3 Flash and are rescaled by the tokenizer of Z.ai. Real usage can differ.