# Claude Opus 5.5 vs Mistral Large 4 - AI Model Comparison

- Page: https://opencode.ai/data/compare/anthropic/claude-opus-5-5/mistral/mistral-large-4

|  | Claude Opus 5.5 | Mistral Large 4 |
| --- | --- | --- |
| Lab | Anthropic | Mistral |
| Context window | 1M | 1M |
| Max output | 128K | 262K |
| Input modalities | text, image, pdf | text, image |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Open weights | No | No |
| Release date | 2026-09-22 | 2026-10-06 |
| Input price per 1M tokens | $4.00 | $0.68 |
| Output price per 1M tokens | $20.00 | $2.09 |
| Cached input price per 1M tokens | $0.20 | $0.07 |
| OpenCode tokens: past 2 months | - | - |
| Share of all tokens | - | - |
| Rank by tokens last week | - | - |
| Unique users | - | - |
| Weekly retention | - | - |

Model pages: [Claude Opus 5.5](https://opencode.ai/data/anthropic/claude-opus-5-5.md), [Mistral Large 4](https://opencode.ai/data/mistral/mistral-large-4.md)

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.