Mathstral

Mathstral

Mistral AI
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About

Claude Fable 5.5 is not currently an announced or released Anthropic model as of September 30, 2026. Anthropic's current model documentation lists Claude Fable 5.1 as the latest Fable model alongside Claude Opus 5.5 and Claude Sonnet 5.5. Fable 5.1 remains Anthropic's premium model for demanding reasoning and long-horizon agentic workloads, with a 1-million-token context window and maximum output of 128,000 tokens. It uses adaptive thinking that is always enabled and defaults to a high reasoning effort level. Fable 5.1 is priced at $10 per million input tokens and $50 per million output tokens, with cache reads priced at $0.25 per million tokens. Anthropic has released Opus 5.5 and Sonnet 5.5, but there is currently no official model documentation, pricing, release date, benchmark data, or API identifier for Claude Fable 5.5.

About

As a tribute to Archimedes, whose 2311th anniversary we’re celebrating this year, we are proud to release our first Mathstral model, a specific 7B model designed for math reasoning and scientific discovery. The model has a 32k context window published under the Apache 2.0 license. We’re contributing Mathstral to the science community to bolster efforts in advanced mathematical problems requiring complex, multi-step logical reasoning. The Mathstral release is part of our broader effort to support academic projects, it was produced in the context of our collaboration with Project Numina. Akin to Isaac Newton in his time, Mathstral stands on the shoulders of Mistral 7B and specializes in STEM subjects. It achieves state-of-the-art reasoning capacities in its size category across various industry-standard benchmarks. In particular, it achieves 56.6% on MATH and 63.47% on MMLU, with the following MMLU performance difference by subject between Mathstral 7B and Mistral 7B.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, AI researchers, enterprises, software engineering teams, and advanced professional users handling demanding reasoning and long-horizon agentic workloads, although Anthropic has not yet announced the model or specified its intended audience

Audience

Individuals focused on mathematical research looking for an AI tool to enhance their problem-solving capabilities

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

Mistral AI
Founded: 2023
France
mistral.ai/news/mathstral/

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Categories

AI Coding Models Supported
AI Models Supported
AI Vision Models Supported
Foundation Models Supported
Multimodal Models Supported

Categories

AI Models Supported
Foundation Models Supported

Integrations

AiAssistWorks Supported
Amazon Bedrock Supported
APIPark Not Supported
Anything Supported
Bash Supported
CSS Supported
HoneyHive Not Supported
Mimasa AI Supported
Model Context Protocol (MCP) Supported
Muse Supported
Nutanix Enterprise AI Not Supported
Orchids Supported
Oxen.ai Supported
Pipeshift Not Supported
RubyMine Supported
Simtheory Supported
Snowflake Cortex AI Supported
Visual Studio Code Supported
Yaseen AI Not Supported
Zo Computer Supported

Integrations

AiAssistWorks Supported
Amazon Bedrock Supported
APIPark Supported
Anything Not Supported
Bash Not Supported
CSS Not Supported
HoneyHive Supported
Mimasa AI Not Supported
Model Context Protocol (MCP) Not Supported
Muse Not Supported
Nutanix Enterprise AI Supported
Orchids Not Supported
Oxen.ai Not Supported
Pipeshift Supported
RubyMine Not Supported
Simtheory Not Supported
Snowflake Cortex AI Not Supported
Visual Studio Code Not Supported
Yaseen AI Supported
Zo Computer Not Supported
Claim Claude Fable 5.5 and update features and information
Claim Claude Fable 5.5 and update features and information
Claim Mathstral and update features and information
Claim Mathstral and update features and information