Overview

Identity

Identity block not returned by the API for this entity.

Openness

Openness not classified yet — no sourced evidence to place this model in the ontology.

Key facts

Release date: Source:OpenRouter public model & pricing listingT2observed 16 h agomedium
Status: Source:Mistral AI docsT1observed 16 h agohigh
Version: Source:Mistral AI docsT1observed 16 h agohigh
Knowledge cutoff: Source:OpenRouter public model & pricing listingT2observed 16 h agomedium
Deprecation date: Source:Mistral AI docsT1observed 16 h agohigh
Retirement date: Source:Mistral AI docsT1observed 16 h agohigh
Official page: docs.mistral.ai/models/mistral-medium-3-1-25-08
Source:Mistral AI docsT1observed 16 h agohigh
API model id: Source:Mistral AI docsT1observed 16 h agohigh
Openrouter id: Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Architecture

Tokenizer: Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Capabilities

Modalities

Modalities: imagetext
Input: imagetext
Output: text

Capabilities

Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
Yes
OpenRouter public model & pricing listing · T2
Reasoning
No
Artificial Analysis · T2
Vision
Yes
OpenRouter public model & pricing listing · T2
Audio
Unavailable
Fine-tuning available
Unavailable

Context window: Source:OpenRouter public model & pricing listingT2observed 13 h agomedium
Max output: Source:OpenRouter public model & pricing listingT2observed 16 h agomedium
Knowledge cutoff: Source:OpenRouter public model & pricing listingT2observed 16 h agomedium
Tokenizer: Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Benchmarks10

Compare with another model →

Comparable same task and conditions · Partially comparable same task, conditions differ (effort, temperature, judge) · Not comparable different variant or metric

No benchmark results recorded

Results appear when a tier 1–3 source publishes them; we never copy scores without a source.

Providers & Pricing2

All offers in the price terminal →

Current prices per 1M tokens
Provider	Input / 1M	Output / 1M	Cached in	Batch in / out	Context	Observed	Source
Mistral AI La Plateformemistralai/mistral-medium-3.1:batch	$0.20	$1	$0.02	—	131.1K	12 h ago	openrouter.aiT2
Mistral AI La Plateformemistralai/mistral-medium-3.1	$0.40	$2	$0.04	—	131.1K	12 h ago	openrouter.aiT2

USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.

Price history

Step lines per provider; amber markers are recorded changes. Click a marker or a row for the evidence behind that price.

Output price · USD / 1M tokens 1 provider

Mistral AI La Plateforme

Mistral AI La Plateforme$2 → $111 Sept 2026
Mistral AI La Plateformefirst observed $211 Sept 2026

Input price · USD / 1M tokens 1 provider

Mistral AI La Plateforme

Mistral AI La Plateforme$0.40 → $0.2011 Sept 2026
Mistral AI La Plateformefirst observed $0.4011 Sept 2026

Timeline15

Full timeline →

12 Sept 2026
Context window changedModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1: context length changed from 128000 to 131072
Context window128K tokens→131.1K tokensopenrouter
openrouter.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 10.61% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 13.86% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 0% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 40.64% on τ²-bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 54.16% on MMMU-Pro
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 39.8% on IFBench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 32.41% on SciCode
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 4.68% on Humanity's Last Exam
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 58.79% on GPQA
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1 scores 9.89 on Artificial Analysis Intelligence Index
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Context window changedModelMistral Medium 3.1Mistral AI
Mistral Medium 3.1: context length changed from 131072 to 128000
Context window131.1K tokens→128K tokensartificial_analysis
artificialanalysis.ai
11 Sept 2026
Listed by providerModelMistral Medium 3.1Mistral AI
Mistral AI La Plateforme lists Mistral Medium 3.1 at $0.2 in / $1 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelMistral Medium 3.1Mistral AI
Mistral AI La Plateforme lists Mistral Medium 3.1 at $0.4 in / $2 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
New modelModelMistral Medium 3.1Mistral AI
New model: Mistral Medium 3.1 (Mistral AI)
mistral
docs.mistral.ai

Change history21

Temporal, append-only claims: a new observation closes the previous claim instead of overwriting it. Rewind the record with the as-of picker.

Viewing AI Atlas as of 12 Mar 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.

Back to today →

Mistral Medium 3.1 was not yet in AI Atlas on 12 Mar 2026

First seen 11 Sept 2026. Nothing is inferred backwards: no attribute is shown for dates before the first observation.

21 claims · 21 properties

Versionversion1

Claim history for Version
Value	Valid from → to	Status	Source	Confidence	Extractor
25.08	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Release daterelease_date1

Claim history for Release date
Value	Valid from → to	Status	Source	Confidence	Extractor
13 Aug 2025	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Statusstatus1

Claim history for Status
Value	Valid from → to	Status	Source	Confidence	Extractor
retired	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Context windowcontext_length1

Claim history for Context window
Value	Valid from → to	Status	Source	Confidence	Extractor
131.1K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Max outputmax_output_tokens1

Claim history for Max output
Value	Valid from → to	Status	Source	Confidence	Extractor
104.9K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Knowledge cutoffknowledge_cutoff1

Claim history for Knowledge cutoff
Value	Valid from → to	Status	Source	Confidence	Extractor
Jun 2025	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Modalitiesmodalities1

Claim history for Modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Input modalitiesmodalities_input1

Claim history for Input modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tokenizertokenizer1

Claim history for Tokenizer
Value	Valid from → to	Status	Source	Confidence	Extractor
Mistral	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

API model idapi_model_id1

Claim history for API model id
Value	Valid from → to	Status	Source	Confidence	Extractor
mistral-medium-2508	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Deprecation datedeprecation_date1

Claim history for Deprecation date
Value	Valid from → to	Status	Source	Confidence	Extractor
22 May 2026	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Retirement dateretirement_date1

Claim history for Retirement date
Value	Valid from → to	Status	Source	Confidence	Extractor
31 Aug 2026	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Official pageofficial_url1

Claim history for Official page
Value	Valid from → to	Status	Source	Confidence	Extractor
https://docs.mistral.ai/models/mistral-medium-3-1-25-08	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Descriptiondescription1

Claim history for Description
Value	Valid from → to	Status	Source	Confidence	Extractor
Mistral Medium 3.1 is an updated version of Mistral Medium 3, which is a high-performance enterprise-grade language model designed to deliver frontier-level capabilities at significantly reduced operational cost. It balances...	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

File inputfile_input1

Claim history for File input
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
Value	Valid from → to	Status	Source	Confidence	Extractor
mistralai/mistral-medium-3.1	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Structured outputstructured_output1

Claim history for Structured output
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
frequency_penalty, max_tokens, presence_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_p	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tool callingtool_calling1

Claim history for Tool calling
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Visionvision1

Claim history for Vision
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

Provenance

Attributed facts

24

Source tiers

T1T26 / 18

Freshest observation

13 h ago

Conflicts

1 flagged

Source documents 3

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
Mistral AI docs	docs.mistral.ai/models	model_docs	T1· Official	10 h ago	1
OpenRouter public model & pricing listing	openrouter.ai/api/v1/models	catalogue	T2· Quality secondary	12 h ago	4
Artificial Analysis	artificialanalysis.ai/leaderboards/models	leaderboard	T2· Quality secondary	14 h ago	1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.

Data quality (69/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →