LLM Comparison
GLM 5.1 vs GLM 5
Side-by-side specs, pricing & capabilities · Updated April 2026
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2/6 modelsSame tier:
G GLM 5.1 | G GLM 5 | |
|---|---|---|
| Organization | Z.ai | Z.ai |
| OpenTools Score | 78 38.1 | |
| Family | GLM | GLM |
| Status | Current | Current |
| Release Date | Apr 2026 | Feb 2026 |
| Context Window | 203K tokens | 80K tokens |
| Input Price | $0.95/M tokens | $0.72/M tokens |
| Output Price | $3.15/M tokens | $2.30/M tokens |
| Pricing Notes | Cache read: $0.4750/M tokens | — |
| Capabilities | textcode | textcode |
| Max Output | 66K tokens | 131K tokens |
| API Identifier | z-ai/glm-5.1 | z-ai/glm-5 |
| View GLM 5.1 | View GLM 5 |
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| GLM 5Cheapest | $0.72 | $1.15 | $1.87 | — |
| GLM 5.1 | $0.95 | $1.58 | $2.53 | +35% |
Z.ai
GLM 5.1
GLM 5.1 is a large language model from Z.ai. Supports up to 202,752 token context window. Available from $0.95/M input tokens.
Z.ai
GLM 5
GLM 5 is a large language model from Z.ai. Supports up to 80,000 token context window. Available from $0.72/M input tokens.
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