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Z.ai: GLM 5.1 API pricing
Last updated
- Input / 1M tokens
- $1.33
- Output / 1M tokens
- $4.18
- Blended / 1M
- $2.04
- 3:1 input:output
- Context window
- 204.8K
- tokens
- Arena Elo
- 1200
Context window
How much text fits in a single request.
204,800 tokens, roughly 153.6K words or 307 pages of English text.
Estimate assumes ~0.75 words per token and 500 words per page. Input and output share this limit.
Price history
USD per 1M tokens at each recorded price change.
| Date | Input / 1M | Output / 1M | Blended / 1M | Change |
|---|---|---|---|---|
| $1.33 | $4.18 | $2.04 | Launch |
Changelog
Notable updates to Z.ai: GLM 5.1.
Z.ai: GLM 5.1 is now tracked with input at $1.33 and output at $4.18 per 1M tokens, a 204800-token context window, and an Elo score of 1200.
Summaries are AI-generated from tracked data changes.
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