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GLM 5.1 API price
z-ai/glm-5.1
The cheapest GLM 5.1 API is $0.966/M input at StreamLake (via OpenRouter) - all 16 providers compared below, per 1M tokens.
MidZ.ai / Zhipu204K context16 sellers
Input
$0.966
per 1M tokens · StreamLake (via OpenRouter)
up to $1.4014
Output
$3.036
per 1M tokens · StreamLake (via OpenRouter)
up to $4.4044
Where to buy it
Cheapest GLM 5.1 API providers compared - 16 sellers, from $0.966/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Uptime | Your cost |
|---|---|---|---|---|---|
| StreamLake (via OpenRouter)fp8 | 0.966cheapest | 3.04 | 0.179 | 100% | |
| Chutesfp8 | 0.980 | 3.08 | - | 100% | |
| TokenRouter (aggregator) | 1.05 | 3.50 | 0.525 | - | |
| SiliconFlowfp8 | 1.19 | 3.74 | 0.600 | 100% | |
| AtlasCloudfp8 | 1.26 | 3.96 | 0.234 | 100% | |
| Phala | 1.21 | 4.20 | 0.600 | 100% | |
| Alibaba (via OpenRouter)fp8 | 1.33 | 4.18 | 0.247 | 100% | |
| Novitafp8 | 1.38 | 4.40 | 0.260 | - | |
| OrcaRouter (aggregator) | 1.40 | 4.40 | - | - | |
| Baidu (via OpenRouter)fp8 | 1.40 | 4.40 | 0.260 | - | |
| Friendli | 1.40 | 4.40 | 0.260 | 100% | |
| GMICloud (via OpenRouter)fp8 | 1.40 | 4.40 | 0.260 | - | |
| Nebius (via OpenRouter)fp8 | 1.40 | 4.40 | - | 100% | |
| Z.AIfp8 | 1.40 | 4.40 | 0.260 | 100% | |
| Together AI (inference host) | 1.40 | 4.40 | 0.260 | - | |
| Venice (via OpenRouter)fp8 | 1.40 | 4.40 | 0.260 | 100% |
1.5× between the cheapest and the dearest of 16 sellers.
Against its tier
- This model$4.002
- Cheapest · Nemotron 3.5 Content Safety$0.40
- Tier median · GLM 5.1$4.002
- Dearest · GPT 5.5 Cyber$87.50
#18 of 35 mid · cheaper than 50%
Details
- Context window
- 204K204,800 tokens
- Developer
- Z.ai / Zhipu
- Intelligence
- 26.1 Reasoning
- Sellers
- 161.5× spread
- Cached input
- $0.1794where the source publishes one
- Cheapest at
- StreamLake (via OpenRouter)
- Combined
- $4.002in + out per 1M
- Last checked
- 2026-10-12
- Availability
- 100.00%median of 10 OpenRouter endpoints, last 30 min