Claude Opus 4.1 vs GLM 5.3 Prime
GLM 5.3 Prime is 7.0× cheaper than Claude Opus 4.1 on a blended basis. GLM 5.3 Prime has the larger context window at 1M tokens.
Side by side
Green marks the better value in each row where a comparison is meaningful.
| Attribute | Claude Opus 4.1 | GLM 5.3 Prime |
|---|---|---|
| Provider | Anthropic | Z.ai |
| Input / 1M tokens | $15.00 | $2.80 |
| Output / 1M tokens | $75.00 | $8.80 |
| Blended / 1M tokens | $30.00 | $4.30 |
| Cached input / 1M | $1.50 | $0.560 |
| Context window | 200K | 1M |
| Max output | 32K | 131K |
| Input modalities | image, text, file | text |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Prompt caching | Yes | Yes |
| Open weights | No | No |
| Knowledge cutoff | 2025-01-31 | - |
| Released | August 5, 2025 | September 23, 2026 |
Frequently asked
Is Claude Opus 4.1 or GLM 5.3 Prime cheaper?
GLM 5.3 Prime is 7.0× cheaper than Claude Opus 4.1 on a blended basis.
What is the price difference between Claude Opus 4.1 and GLM 5.3 Prime?
Claude Opus 4.1 costs $15.00 per million input tokens and $75.00 per million output tokens. GLM 5.3 Prime costs $2.80 and $8.80 respectively.
Which has the larger context window, Claude Opus 4.1 or GLM 5.3 Prime?
GLM 5.3 Prime, at 1M tokens versus 200K.