GPT-6 Astra vs Mistral Large 3

Source-checked evaluation entries, evidence gaps and checked price quotes where available.

GPT-6 Astra

OpenAI
Text Arena1476 ± 6

GPT-6 Astra (Max). Board 2026-10-20; checked 2026-10-22.

Composite / MMLU estimatesWithheld
Standard short-context input quote / 1M tokens$10

OpenAI pricing · checked 2026-10-22. Context tiers and cache-hit rates may differ.

Mistral Large 3

Mistral
Text Arena1415 ± 3

Mistral Large 3. Board 2026-10-20; checked 2026-10-22.

Composite / MMLU estimatesWithheld
Standard short-context input quote / 1M tokens$0.5

Mistral pricing · checked 2026-10-22. Context tiers and cache-hit rates may differ.

What the evidence supports

The recorded entries are GPT-6 Astra (Max) (1476 ± 6) and Mistral Large 3 (1415 ± 3).

Their point estimates differ by 61 points. The displayed ranges do not overlap; this is not a test of task-specific superiority or a guarantee about a different configuration.

The former composite, MMLU and cost-per-capability recommendations are withdrawn because their inputs included unsupported estimates. No upgrade or overall capability recommendation is made from those numbers.

In the selected standard short-context input quotes, Mistral Large 3 has the lower rate, by a ratio of 20 to one. DeepSeek uses peak pricing. This is input pricing only; it does not estimate a whole workload or establish account access.

Price quotes are from the selected provider registry checked 2026-10-22. Unverified legacy quotes are withheld. Use the token calculator for input, output, cache-hit and context-tier scenarios. Additional service charges and account-specific terms can change a bill. Missing pricing evidence does not mean free inference.

Reporting on OpenAI and Mistral