GLM 5.1
Provider：Z.ai (Zhipu)
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...
Key specs
- Context：204.8K
- Max output：128K
- Tokenizer：Other
- Released：2026-04-07
Token pricing
- Input price：$0.966 / 1M tokens
- Output price：$3.04 / 1M tokens
- Cache read：$0.179 / 1M tokens
- Blended price：$1.48 / 1M tokens
Modalities
Text
Use Cases
- Deep Reasoning & Analysis：Process long legal docs, academic papers, financial reports; multi-hop reasoning and evidence-chain tracing across huge contexts.（≈ $0.024/call）
- Chat & Support：FAQ auto-response, multi-turn dialogue, emotion detection — e-commerce, finance, gov.（≈ $0.0061/call）
When to pick this model
Signals derived from public pricing and spec fields — not a benchmark. Validate with official docs and your own eval.
- Long max output (>=30K tokens): strong fit for deep report / essay / document-drafting workflows.
FAQ
- What is the token pricing of GLM 5.1? Input price $0.966 / 1M tokens, output price $3.04 / 1M tokens, blended about $1.48 / 1M tokens. Refer to Z.ai (Zhipu)’s official page for the exact rate.
- What context window does GLM 5.1 support? Context window is 204.8K, max output about 128K, suitable for long documents, multi-turn chat and complex reasoning.
- What scenarios is GLM 5.1 best for? Based on its capability and pricing, GLM 5.1 fits best: Deep Reasoning & Analysis, Chat & Support. See the Use Cases section for details and cost estimates.
- What input/output modalities does GLM 5.1 support? Supports Text modality.
- Is GLM 5.1 a free model? GLM 5.1 is billed per token, not a free model.
- Which provider offers GLM 5.1? GLM 5.1 is offered by Z.ai (Zhipu).
More models from Z.ai (Zhipu)
Full info：GLM 5.1