Claude Fable 5.1 vs Mistral Large 4: Specs & Benchmark Comparison
Claude Fable 5.1 is developed by Anthropic, while Mistral Large 4 comes from Mistral AI. Claude Fable 5.1 was released in September 2026, and Mistral Large 4 followed a month later in October 2026. Mistral Large 4 has a published size of about 1.1 trillion parameters; Anthropic has not disclosed the parameter count of Claude Fable 5.1.
The two models share 2 published benchmarks. They split them evenly, 1 to 1. The widest gaps are on AutomationBench, where Mistral Large 4 scores 59.9% against 31.4%; Terminal-Bench 4.0, where Claude Fable 5.1 scores 55.8% against 28.3%. Averaged across everything we track, Claude Fable 5.1 sits at 59.7% and Mistral Large 4 at 60.4%.
Mistral Large 4 is the cheaper API at $0.68 per million input tokens and $2.09 per million output tokens, roughly 15 times cheaper than Claude Fable 5.1 at $10 and $50. Both accept a context window of about 1M tokens. Both accept text and images as input.
| Characteristic | Claude Fable 5.1 | Mistral Large 4 |
|---|---|---|
| Company | Anthropic | Mistral AI |
| Release Date | September 1, 2026 | October 6, 2026 |
| Parameters | — | 1.1T |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | — |
| Input Price / 1M | $10.00 | $0.68 |
| Output Price / 1M | $50.00 | $2.09 |
| Average Score | 59.7% | 60.4% |
| Benchmarks | ||
| AutomationBench | 31.4% | 59.9% |
| Terminal-Bench 4.0 | 55.8% | 28.3% |
Visual Benchmark Comparison
Verdict
Mistral Large 4 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Claude Fable 5.1 — 0.6, Mistral Large 4 — 0.6.
Mistral Large 4 is 21.7x cheaper: input $0.68/1M vs $10.00/1M tokens.
Same context size: 1M tokens.
Mistral Large 4 is newer: released 10/6/2026 vs 9/1/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5.1 or Mistral Large 4?
Which model is cheaper — Claude Fable 5.1 or Mistral Large 4?
Which has a larger context window — Claude Fable 5.1 or Mistral Large 4?
The Claude Fable 5.1 and Mistral Large 4 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Fable 5.1 or Mistral Large 4 page. See also the complete list of AI model comparisons.