GLM-5.1: API pricing, providers and specs
GLM-5.1 is a text model by Zhipu AI. 32 providers serve it, from $1.44 to $4.84 /1M; the lowest price is at APIMart.
A newer version is out: GLM-5.3 · released Aug 25, 2026
How GLM-5.1 compares
Against the 737 text models on the site priced the same way.
- Mid-priced: its lowest price is $1.44 /1M against a median of $1.10; 57% of comparable models cost less.
- Its 200K-token context window is larger than 32% of them (median 262K), about 300 pages of text.
- On LMArena's WebDev board it ranks #47 of the 64 comparable models scored there.
- 32 providers serve it; 98% of comparable models have fewer.
- Its weights are open under the MIT license: commercial use allowed.
GLM-5.1 prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| APIMart | $0.80/1M | $1.44/1M | — | — |
| DevPass (LLM Gateway) | $0.931/1M | From$2.93/1M | $0.173/1M | — |
 Alibaba | $0.825/1M | From$3.30/1M | — | — |
 EmpirioLabs AI | $0.825/1M | From$3.30/1M | $0.165/1M | 202K |
 APIYI | $0.84/1M | $3.36/1M | — | — |
 AIHubMix | $0.845/1M | $3.38/1M | $0.183/1M | 200K |
 LaoZhang API | $0.857/1M | $3.43/1M | — | — |
 Requesty | $1.05/1M | From$3.50/1M | $0.205/1M | 203K |
 FastRouter | $1.05/1M | $3.50/1M | $0.205/1M | 203K |
 Hugging Face | $1.05/1M | From$3.50/1M | — | — |
| ZenMux | $0.878/1M | From$3.51/1M | $0.19/1M | 200K |
 CometAPI | $1.12/1M | $3.53/1M | $0.224/1M | — |
 SiliconFlow | $1.19/1M | $3.74/1M | $0.60/1M | — |
 CrossModel | $1/1M | From$3.80/1M | $0.20/1M | — |
| SiliconFlow | $0.833/1M | $3.89/1M | — | — |
| Atlas Cloud | $1.26/1M | $3.96/1M | $0.234/1M | — |
 Cortecs | $1.39/1M | $4.37/1M | — | — |
| Z.AIOfficial | $1.40/1M | $4.40/1M | $0.26/1M | — |
 Ofox | $1.40/1M | $4.40/1M | $0.26/1M | 200K |
 Novita AI | $1.38/1M | $4.40/1M | $0.26/1M | — |
| OpenCode | $1.40/1M | $4.40/1M | $0.26/1M | — |
 OrcaRouter | $1.40/1M | $4.40/1M | $0.26/1M | 200K |
| Vercel AI Gateway | $1.40/1M | $4.40/1M | $0.26/1M | 203K |
 Impossibl | $1.40/1M | $4.40/1M | $0.26/1M | — |
| OpenRouter | $1.40/1M | From$4.40/1M | $0.26/1M | 205K |
 Alibaba | $1.40/1M | From$4.40/1M | — | — |
 CrazyRouter | $1.40/1M | $4.40/1M | — | — |
 Jiekou.AI | $1.38/1M | $4.40/1M | $0.26/1M | — |
 Prime Inference | $1.40/1M | $4.40/1M | — | — |
| AI/ML API | $1.40/1M | $4.40/1M | $0.26/1M | — |
 Venice AI | $1.54/1M | $4.84/1M | $0.286/1M | — |
 Azure | $1.54/1M | From$4.84/1M | $0.286/1M | — |
- APIMart$1.44
- DevPass (LLM Gateway)From$2.93
- AlibabaFrom$3.30
- EmpirioLabs AIFrom$3.30
- APIYI$3.36
- AIHubMix$3.38
- LaoZhang API$3.43
- FastRouter$3.50
- RequestyFrom$3.50
- Hugging FaceFrom$3.50
- ZenMuxFrom$3.51
- CometAPI$3.53
Specs
- Type
- Text
- Maker
- Zhipu AI
- Inputs
- Text
- Outputs
- Text
- Context
- 200K≈ 300 pages of text
- Max output
- 131K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling
- Released
- Apr 3, 2026
- License
- MITcommercial use allowed
- Open weights
- Yes, downloadable
- Parameters
- 754B
- Arena score
- 1508WebDev
- Monthly searches
- 7K
Alternatives to GLM-5.1
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| GLM-5.1this model | $1.44/1M | 200K | 1508 | 32 |
| Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
 Gemini 3 Flash | $2.40/1M | 1.05M | 1466 | 5 |
 Mistral Large 4 | $2.09/1M | 1.05M | 1543 | 13 |
 Muse Spark 1.3 | $4.25/1M | 1.05M | 1657 | 11 |
| Qwen3.8 27B | $0.50/1M | 262K | 1591 | 33 |
 Sonar | $1/1M | 127K | — | 9 |
| Grok Build 0.1 | $1.60/1M | 256K | — | 18 |
| Gemini 3.8 Flash | $3/1M | 1.05M | 1585 | 30 |
More from Zhipu AI
GLM-5.3Zhipu AI$1.10/1MGLM-5.3-FlashZhipu AI$0.20/1MGLM-5.2Zhipu AI$1.80/1MGLM-5Zhipu AI$1.28/1MGLM OCRZhipu AI$0.028/1MGLM-4.7-FlashZhipu AI$0.40/1MGLM 5.3 FlashxZhipu AI$0.987/1MGLM-4.7Zhipu AI$1.10/1MGLM-5.1 FAQ
APIMart, at $1.44 /1M. 32 providers serve GLM-5.1; the table above lists every one with its price.
GLM-5.1 reads up to 200K tokens per request and writes up to 131K.
Yes. GLM-5.1's weights can be downloaded from its maker's Hugging Face page, under the MIT license.
About 754B, as the safetensors metadata of its official Hugging Face repo states.
32 API providers serve GLM-5.1. Compare their prices above, or open a provider to see everything it offers.
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