AI Model Release Tracker

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Specifications
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality.
7B—
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider.
32k400k
API pricingUSD per 1M tokens · lower wins
Cheapest inputLowest input rate across every provider on OpenRouter, the lab included. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page.
—$1.25Azure
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
—$10.00Azure
—$750Azure
Overview
CompanyMistralOpenAI
Release dateJul 16 2024Nov 19 2025
AccessOpen WeightClosed
Model detailsView modelView model

Other comparisons

Mathstral 7BvsClaude Haiku 5.5GPT-5.1-Codex-MaxvsClaude Haiku 5.5Mathstral 7BvsGemini 4 ArgonGPT-5.1-Codex-MaxvsGemini 4 ArgonMathstral 7BvsMuse Spark OpenGPT-5.1-Codex-MaxvsMuse Spark OpenMathstral 7BvsGrok 4.7GPT-5.1-Codex-MaxvsGrok 4.7Mathstral 7BvsDeepSeek-V4.1-Flash-1017GPT-5.1-Codex-MaxvsDeepSeek-V4.1-Flash-1017Mathstral 7BvsKimi K3GPT-5.1-Codex-MaxvsKimi K3

Frequently asked questions

Mathstral 7B and GPT-5.1-Codex-Max don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mathstral 7B shipped 491 days before GPT-5.1-Codex-Max, so benchmark comparisons should account for the intervening progress.

Context windows are 32k (Mathstral 7B) vs 400k (GPT-5.1-Codex-Max). Mathstral 7B is open weight, while GPT-5.1-Codex-Max is closed.

Direct benchmark comparisons are unavailable — Mathstral 7B and GPT-5.1-Codex-Max don't publish scores on any of the same benchmarks.