Mistral Medium 3.5
MistralMistralOpen WeightModified MIT License
Description
Mistral Medium 3.5 is Mistral AI's first flagship merged model: a dense 128B-parameter multimodal model with a 256k context window that unifies instruction-following, reasoning, and coding capabilities in a single set of weights. It replaces Mistral Medium 3.1 and Magistral in Le Chat, and Devstral 2 in the Vibe coding agent. Reasoning effort is configurable per request, and the vision encoder was trained from scratch to handle variable image sizes and aspect ratios. Released as open weights under a Modified MIT License.
Release Date
2026-04-29
Parameters
128.0B
Context Length
262K
Modalities
image, text
Capability Radar
14
general
46
coding
75
reasoning
50
science
10
agents
75
multimodal
Rankings
| Domain | #Rank | Score | Source |
|---|---|---|---|
| Agentic Capability | 99 | 35.0 | LS |
| Code Ranking | 236 | 61.0 | AA |
| General Ranking | 205 | 54.0 | AA |
| Science | 268 | 50.0 | AA |
Benchmark Scores (LLM Stats)
(LLM Stats (zeroeval))Agents
Tau3 Telecom
91.4%SR
Tau3 Retail
76.1%SR
Tau3 Airline
72.0%SR
Finance Agent v2
32.1%
Tau3 Banking
13.4%SR
Instruction Following
IFBench
69.0%SR
Language
COLLIE
95.8%SR
Math
AIME 2025
86.3%SR
Beyond AIME
66.9%SR
Reasoning
SWE-Bench Verified
77.6%SR
BrowseCompOpenAI (2025)
48.6%SR
AA Evaluation Indices
(Artificial Analysis)Tau2(Sierra + U Toronto + Vector Institute (2025))94.2
Gpqa(NYU + Cohere + Anthropic (2023))74.8
Lcr(Artificial Analysis)69.3
Ifbench(Google Research (2023))68.8
Terminalbench V2 150.6
Coding Index(Artificial Analysis)46.9
Scicode(UIUC + Argonne National Lab (2024))40.2
Terminalbench Hard(Stanford × Laude Institute (2026))33.3
Tau Banking15.1
Intelligence Index(Artificial Analysis)14.2
Hle(Center for AI Safety + Scale AI (2025))13.8
Terminalbench V4 00.0
LLM Stats Category Scores
(LLM Stats (zeroeval))Language100
Writing100
Math80
Frontend Development80
Code80
Instruction Following70
Reasoning60
General60
Search50
Finance30
Agents30
Tool Calling10
Pricing
Input Price$1.5 / 1M tokens
Output Price$7.5 / 1M tokens
Blended Price (3:1)$3 / 1M tokens
Cache Read Price$0.15 / 1M tokens
Speed
Tokens/sec164.4
Time to First Token0.65s
Time to Answer12.81s
Provider Price Ranking
Provider Price Ranking
6 providers
Cheapest: Mistral AIMost Expensive: Requesty
ProviderInputOutput
1Mistral AICheapest
$0
$0.00001
2MistralPRIMARY
$1.5
$7.5
3OpenRouter
$1.5
$7.5
4Kilo Gateway
$1.5
$7.5
5DevPass (LLM Gateway)
$1.5
$7.5
6Requesty
$1.65
$8.25
Compare pricing across different API providers for this model.