GPT-6 Astra vs Mistral Large 2: Specs & Benchmark Comparison
GPT-6 Astra is developed by OpenAI, while Mistral Large 2 comes from Mistral AI. Mistral Large 2 was released in July 2024, and GPT-6 Astra followed 26 months later in September 2026. Mistral Large 2 has a published size of about 123 billion parameters; OpenAI has not disclosed the parameter count of GPT-6 Astra.
We have 22 benchmark results for GPT-6 Astra and 5 benchmark results for Mistral Large 2, but they were measured on different benchmarks, so there is no like-for-like scoreboard.
Mistral Large 2 is the cheaper API at $2 per million input tokens and $6 per million output tokens, roughly 5 times cheaper than GPT-6 Astra at $10 and $50. GPT-6 Astra takes the larger context window at 1M tokens, compared with 128K for Mistral Large 2. GPT-6 Astra accepts text and images as input, while Mistral Large 2 accepts text.
| Characteristic | GPT-6 Astra | Mistral Large 2 |
|---|---|---|
| Company | OpenAI | Mistral AI |
| Release Date | September 4, 2026 | July 24, 2024 |
| Parameters | — | 123B |
| Multimodal | Yes | No |
| Context (input) | 1.1M | 128K |
| Context (output) | 128K | 128K |
| Input Price / 1M | $10.00 | $2.00 |
| Output Price / 1M | $50.00 | $6.00 |
| Average Score | 74.4% | 87.6% |
Verdict
GPT-6 Astra leads in 2 out of 4 comparison categories.
Both models show comparable average scores: GPT-6 Astra — 0.7, Mistral Large 2 — 0.9.
Mistral Large 2 is 7.5x cheaper: input $2.00/1M vs $10.00/1M tokens.
GPT-6 Astra supports a larger context: 1M vs 128K tokens.
GPT-6 Astra is newer: released 9/4/2026 vs 7/24/2024.
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Frequently Asked Questions
Which is better for coding — GPT-6 Astra or Mistral Large 2?
Which model is cheaper — GPT-6 Astra or Mistral Large 2?
Which has a larger context window — GPT-6 Astra or Mistral Large 2?
The GPT-6 Astra and Mistral Large 2 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-6 Astra or Mistral Large 2 page. See also the complete list of AI model comparisons.