Muse Spark 1.2vsMistral Medium 3.5
Muse Spark 1.2 | Mistral Medium 3.5 | |
|---|---|---|
| Specifications | ||
Parameters | — | 128B |
Context window | 1M | 256k |
| Benchmarks | ||
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 77.6% |
Agentic coding DeepSWE 1.1Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | 59.3% | — |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | 82.9% | — |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1267 |
| Overview | ||
| Company | Meta | Mistral |
| Release date | Aug 5 2026 | Apr 29 2026 |
| Access | Proprietary | Open Weight |
Which is better: Muse Spark 1.2 or Mistral Medium 3.5?
Muse Spark 1.2 and Mistral Medium 3.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Medium 3.5 shipped 98 days before Muse Spark 1.2, so benchmark comparisons should account for the intervening progress.
Context windows are 1M (Muse Spark 1.2) vs 256k (Mistral Medium 3.5). Muse Spark 1.2 is proprietary, while Mistral Medium 3.5 is open weight.
Direct benchmark comparisons are unavailable — Muse Spark 1.2 and Mistral Medium 3.5 don't publish scores on any of the same benchmarks.
Frequently asked questions
Muse Spark 1.2 was released by Meta on Aug 5 2026.
Mistral Medium 3.5 was released by Mistral on Apr 29 2026.
Muse Spark 1.2 has a 1M context window; Mistral Medium 3.5 has 256k.
Muse Spark 1.2 is a proprietary model released by Meta. Mistral Medium 3.5 is an open weight model released by Mistral.