All modelsCalculate what your real prompts cost on GLM 5.1
GLM 5.1
open sourceZ.ai model, released 7 Apr 2026.
$0.966
per 1M input tokens
$3.04
per 1M output tokens
$0.179
per 1M cached-read tokens
Price history
input $/1M output $/1M7 Jul 2026 → 15 Aug 2026
Specifications
- Lab
- Z.ai
- Released
- 7 Apr 2026
- Context window
- 205k tokens
- Max output
- 128k tokens
- Input modalities
- text
- Output modalities
- text
- Knowledge cutoff
- —
- Open source
- Yes
Frequently asked questions
How much does GLM 5.1 cost?
GLM 5.1 costs $0.966 per 1M input tokens and $3.04 per 1M output tokens (list price, updated every 6 hours).
What is GLM 5.1's context window?
GLM 5.1 supports a 205k-token context window with up to 128k output tokens.