Home / Price changes / GLM 5.1
GLM 5.1 price cut: output $4.40 → $3.04 per 1M tokens
Z.ai's GLM 5.1 changed its list price between Aug 14, 2026 and Aug 21, 2026: input $1.40 → $0.97 and output $4.40 → $3.04 per 1M tokens (-31%).
What it means per task
Same tokens as today's measurement, old price vs new price.
| Task | Before | After | Per 1,000 tasks |
|---|---|---|---|
| Answer a chat question | 0.79¢ | 0.55¢ | $7.91 → $5.46 |
| Reply to a customer email | 0.15¢ | 0.10¢ | $1.51 → $1.04 |
| Write a 1,500-word blog post | 3.1¢ | 2.1¢ | $30.55 → $21.08 |
| Write 10 product descriptions | 3.1¢ | 2.2¢ | $31.39 → $21.66 |
| Translate 1,000 words | 4.7¢ | 3.2¢ | $46.54 → $32.12 |
| Proofread one page (500 words) | 0.45¢ | 0.31¢ | $4.53 → $3.12 |
| Summarize a 20-page PDF | 2.6¢ | 1.8¢ | $26.17 → $18.06 |
| Extract data from an invoice | 0.51¢ | 0.35¢ | $5.08 → $3.51 |
| Analyze a 200-row spreadsheet | 7.7¢ | 5.3¢ | $77.26 → $53.31 |
| Answer from 5 retrieved documents (RAG) | 1.4¢ | 0.96¢ | $13.87 → $9.57 |
| Classify 100 support tickets | 3.6¢ | 2.5¢ | $36.34 → $25.08 |
| Review 500 lines of code | 7.7¢ | 5.3¢ | $76.74 → $52.95 |
| Write a SQL query | 0.72¢ | 0.50¢ | $7.20 → $4.97 |
| Run a 50-step coding agent | $3.33 | $2.30 | $3,328 → $2,297 |