GLM-5.1
by Z.ai (Zhipu AI)Chat
Flagship GLM model for hybrid reasoning, coding, and agentic engineering
- Context
- 200K tokens
- Max output
- 131,072 tokens
- Parameters
- 754B total
- Released
- 2026-03-27
- Weights
- Open
- Licence
- mit
zhipuai/glm-5-1 · also seen as zai-org/GLM-5.1, z-ai/glm-5.1, zai/GLM-5.1, coding-glm-5.1, +14 more
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-03-27
- Weights
- Opennot gated
- License
- mit
- Input
- Text
- Output
- Text
- Context window
- 200,000 max across endpoints
- Max output
- 131,072
- Providers
- 41 + 25 gateways, not counted as providers
- Epoch Capabilities Index
- 150 ± 1.9 against price
- Direct price range
- $0.857–$1.540 in · $3.03–$4.84 out per 1M tokens · 31 of 41 providers have a comparable price
More details
- Last updated
- 2026-07-02
- Knowledge cutoff
- 2025-11
- Weights link
- Hugging Face · zai-org/GLM-5.1
- Parameters
- 754B total
- Developer country
- China
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel tools
- Structured output
- Reasoning
- Image input
- PDF input
- Audio input
- Audio outputunknown
- Video input
- Prompt caching
- Web searchunknown
- Computer useunknown
- System messages
- Assistant prefillunknown
- Temperature
- Streamingunknown
- Attachments
Endpoints
One row per provider and variant; gateways are listed separately.
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Price history
Atom feedNo change since 19 Oct 2026. The cheapest direct price has been $0.965 in / $3.03 out per 1M tokens at Baidu on every data refresh since then.
Tracked from 19 Oct 2026, the earliest refresh this model's headline price can be rebuilt from. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON
Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs GLM-5.1 |
|---|---|---|---|---|---|
| GlimpseElorian | $1.00 | $0.60 | $3.00 | 262K | +0% |
| Hermes 3 Llama 3.1 405bNous Research | $1.00 | $1.00 | $1.00 | 131K | +0% |
| Kimi K2 0905 PreviewMoonshot AI | $0.948 | $0.632 | $2.53 | 262K | −5% cheaper |
| Morph v3 LargeMorph | $1.07 | $0.90 | $1.90 | 262K | +7% |
| Aion-2.0Aion Labs | $0.933 | $0.80 | $1.60 | 131K | −7% cheaper |
| Aion-RP 1.0 (8B)Aion Labs | $0.933 | $0.80 | $1.60 | 32.8K | −7% cheaper |
| Dola Seed 2.0 CodeByteDance Seed | $0.917 | $0.50 | $3.00 | 131K | −8% cheaper |
| Seed 2.0 ProByteDance Seed | $0.917 | $0.50 | $3.00 | 131K | −8% cheaper |
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