Claude Opus 4.5 vs Mistral Large 3
Anthropic vs Mistral · Prices checked November 11, 2026
Mistral Large 3 is the cheaper of the two by a wide margin: $0.8000 per million tokens blended against $11.00, roughly 13.8× less. A single 100K-input, 10K-output job costs $0.0650 on Mistral Large 3 against $0.7500 on Claude Opus 4.5.
Pricing and capacity
RatesUSD per million tokens. Prices checked November 11, 2026.
| Metric | Claude Opus 4.5 | Mistral Large 3 | Difference |
|---|---|---|---|
| Input / 1M tokens | $5.00 | $0.5000 | 10.0× |
| Output / 1M tokens | $25.00 | $1.50 | 16.7× |
| Blended · 70/30calculated | $11.00 | $0.8000 | 13.8× |
| Blended · 50/50calculated | $15.00 | $1.00 | 15.0× |
| Blended · 80/20calculated | $9.00 | $0.7000 | 12.9× |
| Blended · 20/80calculated | $21.00 | $1.30 | 16.2× |
| Job cost · 100K + 10Kcalculated | $0.7500 | $0.0650 | 11.5× |
| Job cost · 1M + 100Kcalculated | $7.50 | $0.6500 | 11.5× |
| Context window | 200,000 | 256,000 | 22% |
Input and output rates are as published by each provider. Blended and job-cost rows are calculated comparison metrics, not published prices — how they are derived.
Claude Opus 4.5 leads on 1 of the 1 benchmarks both models report. The widest gap is on LMArena Elo, where Claude Opus 4.5 leads by 56 points. Mistral Large 3 takes a 256,000-token context window against 200,000, giving a modest edge for long documents or whole-codebase work.
Benchmarks
| Benchmark | Claude Opus 4.5 | Mistral Large 3 | Leader |
|---|---|---|---|
| LMArena Elo | 1470 Elo | 1414 Elo | Claude Opus 4.5 |
Only suites both models report are listed, so a missing score is never shown as a loss. Figures are provider-published or from public leaderboards and are not independently re-run.
What each model is for
Claude Opus 4.5
Anthropic · Previous
Direct predecessor to Opus 4.6. Strong choice when you need Claude 4 behaviour without changing existing prompts and evals tuned to the 4.5 generation.
- 1M-token context
- Stable for production pipelines
- Strong agentic coding
- Tool use & function calling
Mistral Large 3
Mistral · Frontier
Frequently asked questions
Which is cheaper, Claude Opus 4.5 or Mistral Large 3?
Mistral Large 3 is the cheaper of the two by a wide margin: $0.8000 per million tokens blended against $11.00, roughly 13.8× less. A single 100K-input, 10K-output job costs $0.0650 on Mistral Large 3 against $0.7500 on Claude Opus 4.5. Blended cost weights input at 70% and output at 30%; price your own token split for an exact answer, since the cheaper model on a blended basis is not always cheaper for your workload.
Which performs better, Claude Opus 4.5 or Mistral Large 3?
Claude Opus 4.5 leads on 1 of the 1 benchmarks both models report. The widest gap is on LMArena Elo, where Claude Opus 4.5 leads by 56 points. These are the figures each provider or public leaderboard publishes, not results we re-run, and a benchmark average can hide the specific behaviour your workload depends on.
Which has the larger context window, Claude Opus 4.5 or Mistral Large 3?
Mistral Large 3 takes a 256,000-token context window against 200,000, giving a modest edge for long documents or whole-codebase work. The context window caps everything in a single request: prompt, retrieved documents, conversation history and the model’s own output all share it.
Can I compare Claude Opus 4.5 and Mistral Large 3 on my own numbers?
Yes. Open both in the side-by-side comparison tool to see every field at once, or use the token calculator to price your actual prompt and monthly request volume against each model. Both are free and need no sign-up.
Price it for your own workload
Related matchups
Terms used on this page
Prices and scores are recomputed on every deploy from the catalogue. Prices checked November 11, 2026.