Mistral Medium 3.1

Name: Mistral Medium 3.1
Author: Mistral AI

Mistral AI · 2025-08-12

Mistral Medium 3.1 is Mistral AI's August 2025 update to its frontier-class multimodal Medium 3 series. It retains text-and-image input and a 128K-token context window while improving tone and overall performance over Medium 3.

Benchmark scores

Benchmark	Score
AA-Briefcase Elo	538
AA-Briefcase v1.1 Elo	531
AA-LCR	19.7
AA-LCR v1.1	42.7
AA-Omniscience Index	-46.3
AIME 2025 (Artificial Analysis avg@10)	38.3
ALE-Bench	701
Arena Text — Business, Management & Financial Ops (No Style Control)	1418
Arena Text — Chinese (No Style Control)	1447
Arena Text — Creative Writing (No Style Control)	1391
Arena Text — English (No Style Control)	1438
Arena Text — Entertainment, Sports & Media (No Style Control)	1390
Arena Text — Exclude Ties (No Style Control)	1415
Arena Text — Exclude Ties (Style Controlled)	1393
Arena Text — Expert (No Style Control)	1408
Arena Text — French (No Style Control)	1460
Arena Text — French (Style Controlled)	1434
Arena Text — German (No Style Control)	1432
Arena Text — Hard Prompts (No Style Control)	1426
Arena Text — Hard Prompts English (No Style Control)	1435
Arena Text — Instruction Following (No Style Control)	1398
Arena Text — Japanese (No Style Control)	1379
Arena Text — Korean (No Style Control)	1380
Arena Text — Legal & Government (No Style Control)	1439
Arena Text — Life, Physical & Social Science (No Style Control)	1444
Arena Text — Longer Query (No Style Control)	1406
Arena Text — Medicine & Healthcare (No Style Control)	1449
Arena Text — Multi-turn (No Style Control)	1418
Arena Text — Non-English (No Style Control)	1408
Arena Text — Non-English (Style Controlled)	1389