Mistral AI model product
Mistral Medium 3.5
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.
Updated Aug 12, 2026. Default version: Mistral Medium 3.5
LLMBoard score49.2Mistral Medium 3.5
Coverage60%8 benchmark families
Context window262.1KTokens
Official input price$1.5Mistral API
Mistral Medium 3.5 Specifications
Technical details for the model's default version.
- Version
- Mistral Medium 3.5
- Released
- Apr 29, 2026
- Knowledge cutoff
- Unknown
- Parameters
- 128B
- Context window
- 262.1K
- Max output
- 262.1K
- Inputs
- image, text
- Outputs
- text
- Open weights
- Yes
- License
- Modified MIT License
Mistral Medium 3.5 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Mistral Medium 3.5 Benchmark Results
Benchmark scores for Mistral Medium 3.5.
| Tau3 Airline | 72.0% | 01 | 1 | 100.0% | C | |
| Tau3 Retail | 76.1% | 01 | 1 | 100.0% | C | |
| Tau3 Telecom | 91.4% | 01 | 1 | 100.0% | C | |
| Tau3 Banking | 13.4% | 03 | 3 | 0.0% | C | |
| Beyond AIME | 66.9% | 04 | 5 | 25.0% | C | |
| COLLIE | 95.8% | 04 | 10 | 66.7% | C | |
| IFBench | 69.0% | 21 | 29 | 28.6% | C | |
| Finance Agent v2 | 32.1% | 22 | 26 | 16.0% | B | |
| SWE-Bench Verified | 77.6% | 24 | 105 | 77.9% | C | |
| BrowseComp | 48.6% | 46 | 58 | 21.1% | C | |
| AIME 2025 | 86.3% | 59 | 114 | 48.7% | C |
Mistral Medium 3.5 Arena Results
Preference and agent-evaluation results for the default version.
| agent bash recovery steps | overall | 31 | -0.0 | N/A | 4.9K | |
| agent praise complaint | overall | 35 | -0.1 | N/A | 868 | |
| agent | overall | 38 | -0.1 | N/A | 136.8K | |
| agent task outcome explicit | overall | 41 | -0.1 | N/A | 2.7K | |
| agent steerability | overall | 43 | -0.1 | N/A | 3.5K | |
| agent tool hallucination | overall | 44 | -0.0 | N/A | 125K | |
| vision | overall | 64 | 1221.2 | 5,110 | N/A | |
| vision style control | overall | 73 | 1198.2 | 5,110 | N/A | |
| text | overall | 84 | 1425.0 | 94,077 | N/A | |
| vision | overall | 87 | 1172.1 | 41,623 | N/A | |
| text | overall | 93 | 1420.8 | 11,025 | N/A | |
| text factuality | overall | 93 | 1430.5 | 10,966 | N/A | |
| vision style control | overall | 93 | 1158.7 | 41,623 | N/A | |
| text style control | overall | 94 | 1426.9 | 11,025 | N/A | |
| webdev | overall | 95 | 1265.8 | 2,153 | N/A | |
| text factuality | overall | 97 | 1429.0 | 66,986 | N/A | |
| text style control | overall | 129 | 1409.0 | 94,077 | N/A |
Mistral Medium 3.5 Runtime Performance
Provider-specific output speed and catalog latency for Mistral Medium 3.5. Runtime does not affect the capability score.
| Mistral AI | 46.385 tok/s | 0.411 s | 256K | 256K |
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Mistral Medium 3.5 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $1.5 input, $7.5 output per 1M
- Official provider
- Mistral
- Lowest third-party
- N/A
- Tracked offerings
- 1
| Mistral | mistral-medium-2604 | global | $1.5 | $7.5 | 262.1K |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Mistral Medium 3.5 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Mistral Medium 3.5 | 49.2 | 128B | 262.1K | 262.1K | Yes | Modified MIT License |
What is Mistral Medium 3.5?
Key information about Mistral Medium 3.5 and its available data.
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. 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.
Data as of 2026-08-11.
Mistral Medium 3.5 vs nearby models
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FAQ
Common questions about Mistral Medium 3.5.
When was Mistral Medium 3.5 released?
Mistral Medium 3.5's default version was released on Apr 29, 2026.
How much does Mistral Medium 3.5 cost?
Mistral Medium 3.5's official API price is $1.5 per million input tokens and $7.5 per million output tokens via Mistral.
Who created Mistral Medium 3.5?
Mistral Medium 3.5 was created by Mistral AI.
What is the context window for Mistral Medium 3.5?
The default version has a 262.1K token context window.
Is Mistral Medium 3.5 open weight?
Yes. The default version is marked as open weight under Modified MIT License.
How many API providers offer Mistral Medium 3.5?
1 provider offerings are linked to the default version.
What models should I compare Mistral Medium 3.5 with?
Nearby ranked alternatives include GPT-5, GPT-5.1-Codex, GLM 4.5.