GLM-5.1
As of Oct 4, 2026, the cheapest GLM-5.1 API price is $0.45 per 1M input tokens (CrofAI) and $2.15 per 1M output tokens (CrofAI). GLM-5.1 is offered by 51 providers in the glm family, open weights, reasoning enabled. Z.AI's own rate is $4.4 per 1M output tokens. One provider lists it as a free-tier offer. It is also included in 3 flat-rate subscription plans, Qwen (Alibaba Cloud) Token Plan Lite from $8/mo.
API pricing by provider
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.
| Provider | 1M input | 1M output | 1M cache read | 1M cache write | Context | Changed |
|---|---|---|---|---|---|---|
| CrofAIopen | Cheapest$0.45 | Cheapest$2.15 | $0.08 | free | 203k | — |
| HPC-AIopen | $0.615 | $2.46 | $0.133 | — | 202k | — |
| NanoGPTopen | $0.75 | $2.6 | $0.15 | — | 200k | — |
| DevPass (LLM Gateway)open | $0.931 | $2.93 | $0.173 | free | 205k | — |
| Alibaba (China)open | †$0.825 | $3.301 | $0.17 | — | 203k | — |
| EmpirioLabs AIopen | †$0.825 | $3.301 | $0.165 | — | 202k | — |
| AIHubMixopen | $0.84 | $3.38 | $0.169 | $1.0562 | 200k | — |
| AIHubMixopen | $0.845 | $3.38 | $0.1831 | — | 200k | — |
| EBCloudopen | $0.8571 | $3.4286 | — | — | 200k | — |
| GMI Cloudopen | $0.98 | $3.08 | $0.182 | — | 203k | — |
| Pioneeropen | $0.98 | $3.08 | $0.182 | $0.98 | 202k | — |
| ZenMuxopen | $0.8781 | $3.5126 | $0.1903 | — | 200k | — |
| Hugging Faceopen | $1 | $3.2 | $0.2 | — | 203k | — |
| Ollama Cloudopen | $1 | $3.2 | $0.2 | — | 203k | — |
| Waferopen | $1 | $3.2 | $0.1 | free | 203k | — |
| FastRouteropen | $1.05 | $3.5 | — | — | 200k | — |
| CrossModelopen | $1 | $3.8 | $0.2 | $1 | 200k | — |
| DInferenceopen | $1.25 | $3.89 | — | — | 200k | — |
| Crusoeopen | $1.2 | $4.4 | $0.25 | — | 200k | — |
| Basetenopen | $1.3 | $4.3 | $0.26 | — | 203k | — |
| DigitalOceanopen | $1.3 | $4.3 | $0.26 | — | 164k | — |
| Cortecsopen | $1.384 | $4.348 | $0.346 | — | 203k | — |
| Jalapeno Cloudopen | $1.38 | $4.4 | — | — | 203k | — |
| LLM Gatewayopen | $1.38 | $4.4 | $0.26 | — | 205k | — |
| NovitaAIopen | $1.38 | $4.4 | $0.26 | — | 205k | — |
| 302.AIopen | $1.4 | $4.4 | — | — | 200k | — |
| Abacusopen | $1.4 | $4.4 | $0.26 | — | 205k | — |
| Ambientopen | $1.4 | $4.4 | free | free | 203k | — |
| Aurikoopen | $1.4 | $4.4 | $0.26 | — | 200k | — |
| Eden AIopen | $1.4 | $4.4 | $0.26 | — | 203k | — |
| Friendliopen | $1.4 | $4.4 | $0.26 | — | 203k | — |
| FrogBotopen | $1.4 | $4.4 | $0.26 | — | 198k | — |
| Impossiblopen | $1.4 | $4.4 | $0.26 | — | 200k | — |
| Kilo Gatewayopen | $1.4 | $4.4 | $0.26 | — | 203k | — |
| LLM Gatewayopen | $1.4 | $4.4 | $0.26 | — | 200k | — |
| LLM Gatewayopen | $1.4 | $4.4 | $0.26 | — | 200k | — |
| Merge Gatewayopen | $1.4 | $4.4 | $0.26 | free | 200k | — |
| Ofoxopen | $1.4 | $4.4 | $0.26 | — | 200k | — |
| OpenCode Zenopen | $1.4 | $4.4 | $0.26 | — | 205k | — |
| OpenRouteropen | $1.4 | $4.4 | $0.26 | — | 205k | yesterdayout +45.1% |
| OrcaRouteropen | $1.4 | $4.4 | $0.26 | free | 200k | — |
| Requestyopen | $1.4 | $4.4 | $0.26 | — | 200k | — |
| Requestyeuopen | $1.4 | $4.4 | $1.4 | — | 200k | — |
| Tempr Gatewayopen | $1.4 | $4.4 | $0.26 | free | 200k | — |
| TensorXopen | $1.4 | $4.4 | $0.35 | $1.75 | 203k | — |
| TokenGoopen | $1.4 | $4.4 | $0.26 | — | 200k | — |
| Vercel AI Gatewayopen | $1.4 | $4.4 | $0.26 | — | 203k | — |
| Z.AIopen | $1.4 | $4.4 | $0.26 | free | 200k | — |
| Zhipu AI | $1.4 | $4.4 | $0.26 | free | 200k | — |
| Meliousopen | $1.507 | $4.6368 | $0.3709 | — | 203k | — |
| Venice AIopen | $1.54 | $4.84 | $0.286 | — | 200k | — |
| Kenarifree | free | free | — | — | 200k | — |
Subscription plans (not per-token)
Billed per month, not per token — never counted as the cheapest offer.
| Provider | 1M input | 1M output | Context |
|---|---|---|---|
| Alibaba Token Planplan | free | free | 203k |
| Alibaba Token Plan (China)plan | free | free | 203k |
| SCNet Token Planplan | free | free | 200k |
GLM-5.1 pricing FAQ
What is the cheapest GLM-5.1 API?
As of Oct 4, 2026, CrofAI has the lowest GLM-5.1 output price at $2.15 per 1M tokens, and CrofAI has the lowest input price at $0.45 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.
How much does GLM-5.1 cost on Z.AI?
Z.AI charges $1.4 per 1M input tokens and $4.4 per 1M output tokens for GLM-5.1.
How many providers offer GLM-5.1?
51 providers list GLM-5.1 on Sovyron; 51 of them sell it at a metered per-token price.
Is GLM-5.1 free?
1 provider(s) list a free-tier offer: Kenari. Free tiers usually have rate limits.
Is GLM-5.1 included in a subscription plan?
Yes. 3 flat-rate plan(s) include it; the cheapest is Qwen (Alibaba Cloud) Token Plan Lite at $8/month.
What is the context window of GLM-5.1?
GLM-5.1 supports a 205k-token context window and up to 203k output tokens.