Mistral AI

Key Terms

• Vibe - Mistral AI's unified agent for long-horizon work and coding tasks. Formerly "Le Chat," rebranded May 28, 2026. Available via web, mobile, CLI, and IDE. Source: Mistral AI – Vibe
• Mistral Medium 3.5 - Mistral's flagship 128B dense model with a 256K context window, open weights under a modified MIT license. Scores 77.6% on SWE-Bench Verified. API: $1.50/$7.50 per MTok. Source: Mistral AI – Mistral Medium 3 5 26 04
• Codestral - Specialist code completion model (Premier) for FIM (Fill-in-the-Middle) completion and code generation. API: $0.30/$0.90 per MTok. Source: Mistral AI – Api
• Devstral 2 - Open-weight agentic coding model for autonomous software engineering. API: $0.40/$2.00 per MTok. Deprecated May 22, 2026; announced to retire July 31, 2026. Still listed on the pricing page as of July 31. Source: Mistral AI – Api
• Leanstral 1.5 - A Labs (experimental) Lean 4 formal proof engineering model. 119B total parameters, 6.5B active (sparse), 256K context. Apache 2.0 licensed. Endpoint labs-leanstral-1-5. Price: $0 (free during a limited Labs period). Model released June 30, 2026; detailed blog post published July 2, 2026. Source: Mistral AI – Leanstral 1 5
• Regional Inference - API endpoints that route requests to models hosted in a specific geographic region, guaranteeing inference occurs within that region. EU endpoint (api.eu.mistral.ai) is live; US endpoint (api.us.mistral.ai) is coming soon. Priced at 1.1x standard list pricing (10% upcharge). Source: Mistral AI – Regional Inference
• PAYG (Pay-as-you-go) - Once included plan usage is exhausted, you continue at API rates. Source: Mistral AI – Pricing
• Labs - Mistral's designation for experimental models (e.g., Leanstral 1.5, Devstral Small 2) that are kept accessible to gather feedback and are not production-stable. Source: Mistral AI – Labs
• Robostral Navigate - Mistral's first embodied AI model (8B parameters), built for robotic navigation using a single RGB camera. Launched July 8, 2026. Not a coding model. Achieves 76.6% on R2R-CE validation unseen. Source: Mistral AI – Robostral Navigate

Latest Changes

Changes since the 2026-06 report.

June watch-item verification

• Devstral 2 retirement by July 31: STILL-PENDING. As of July 31 (this report date), Devstral 2 is still listed at $0.40/$2.00 per MTok on the API pricing page with no retirement notice or removal. The model card is also still live. The announced retirement date of July 31 has arrived with no visible action. Source: Mistral AI – Api
• New model launches: PARTIAL. Robostral Navigate (July 8, 2026) launched as an 8B embodied navigation model for robots, not a coding model. No new coding model was released in July. Source: Mistral AI – Robostral Navigate
• Vibe CLI successor model naming: FAILED. The plans pricing page still describes the Vibe CLI as "Terminal-native coding agent powered by Devstral" and Vibe for IDE as "VS Code and JetBrains plugin powered by Devstral." Despite Devstral 2's announced July 31 retirement, no successor model for the CLI/IDE has been named. Source: Mistral AI – Pricing
• Mistral Small 4 pricing stabilization: CONFIRMED. Mistral Small 4 remains at $0.15/$0.60 per MTok, unchanged from the June report's recorded price and stabilizing after the unannounced increase from $0.10/$0.30 that occurred between the May and June reports. Source: Mistral AI – Api

New July developments

• Feature: Regional Inference Endpoints now live. The API pricing page now displays a banner: "Regional Inference Endpoints are now live!" The EU endpoint (api.eu.mistral.ai) is available, routing requests to "multiple data centers in EU/EFTA countries." The US endpoint (api.us.mistral.ai) is listed as "Coming soon." Regional inference is billed at 1.1x standard list pricing (10% upcharge) for input, output, cached reads, and cache writes. Limitations: only Function Calling is supported for tool calls (no other agent tools); stateful features (Agents, Batch, Files API) are not available on regional endpoints. Source: Mistral AI – Regional Inference
• New model (non-coding): Robostral Navigate launched July 8. An 8B model for embodied robotic navigation, using only a single RGB camera (no LiDAR or depth sensors). Achieves 76.6% success rate on R2R-CE (Room-to-Room in Continuous Environments) validation unseen, beating the best multi-sensor approach by 4.5 points. Built in-house, trained entirely in simulation on 2.4 million trajectories across 350K scenes. No API pricing or endpoint is listed on the pricing page; Mistral directs interested parties to "talk with our team." Source: Mistral AI – Robostral Navigate
• Leanstral 1.5 full blog post with benchmarks published July 2. The botched June 30 launch (broken model card, missing weights) has been repaired. The full blog post and model card are now live. Published benchmarks: saturates miniF2F (100% on both validation and test), solves 587/672 PutnamBench problems, 87% FATE-H (state-of-the-art), 34% FATE-X (state-of-the-art). The model also uncovered 5 previously unknown bugs across 57 open-source repositories tested. Weights are on Hugging Face under Apache 2.0. Sources: Mistral AI – Leanstral 1 5 , Mistral AI – Leanstral 1 5
• Product: Studio prompt and skill versioning (July 9). Studio now provides a centralized system of record for AI prompts and skills: immutable versions, rollback, clear ownership, classification labels, and audit logs. Promoted as a governance tool for enterprises managing prompt assets across teams. Available now to Studio customers. Source: Mistral AI – Manage Prompts And Skills In Studio
• Business: Microsoft "multibillion-dollar" deal reported July 21. France24 reported a "multibillion-dollar" deal between Microsoft and Mistral, described as expanding Mistral's AI capabilities. The HackerNews thread (46 points, 15 comments) did not yield extractable quotes due to rate-limiting, and the France24 article returned HTTP 403 to standard fetching. The exact deal value and scope are undisclosed. Source: France24 – 20260721 Microsoft Strikes Multi Billion Dollar Deal To Expand France Ai Firm Mistral ; News – Item
• Documentation inconsistency: Leanstral endpoint naming. The API pricing page lists the Leanstral endpoint as labs-leanstral-2603, while the model card and blog post reference labs-leanstral-1-5. The 2603 suffix corresponds to the March 2026 original Leanstral, suggesting the pricing page has not been updated to reflect the June 30 / 1.5 release. Source: Mistral AI – Api ; Mistral AI – Leanstral 1 5
• No update: Vibe CLI/IDE still "powered by Devstral." The pricing page's interface descriptions still state both the Vibe CLI and Vibe for IDE are "powered by Devstral," even as Devstral 2's retirement deadline passes with no successor named. Source: Mistral AI – Pricing
• No update: Les Ulis data center. No July news was published on the Les Ulis 10 MW data center specifically, though the new Regional Inference Endpoints partially deliver on the EU data-residency promise that Les Ulis was expected to fulfill. The Airbus, BMW, and ASML partnerships also had no July update. Source: Mistral AI – News
• No pricing changes. All model prices, plan prices, and tool/API prices are identical to the June report. Source: Mistral AI – Pricing ; Mistral AI – Api

Plans

Source: Mistral AI – Pricing

Feature Comparison (from Pricing Page)

Source: Mistral AI – Pricing

Terms explained:

• Flash answers - Quick, short responses from the model. Pro gets 150/day, Team gets 200/day. Source: Mistral AI – Pricing
• PAYG (Pay-as-you-go) - Once included plan usage is exhausted, you can continue at API rates. Source: Mistral AI – Pricing
• Teleport - Feature that moves a live Vibe CLI session between local terminal and cloud, keeping history and approvals intact. Source: Mistral AI – Pricing

API Pricing

Coding-Relevant Models

General-Purpose / Reasoning Models

Specialist Models

Tool / API Pricing

Regional Inference Pricing

Source: Mistral AI – Regional Inference

Enterprise APIs

Enterprise APIs include regional data processing controls, system-level SLAs, increased rate limits, and premium support. Available for 75% above list pricing on select APIs. Source: Mistral AI – Api ; Mistral AI – Enterprise Deployments

Fine-tuning available for: Codestral ($3/MTok training, $0.20/$0.60 storage), Mistral NeMo ($1/MTok training, $0.15/$0.15 storage), Ministral models ($1/MTok training, $2/mo storage). Source: Mistral AI – Api

Model Performance / Benchmarks

Mistral published no new coding-model benchmarks in July (Medium 3.5 scores are unchanged from May). However, the Leanstral 1.5 blog post (July 2) added full formal-reasoning benchmarks that were missing from the botched June 30 launch.

Coding Models

Mistral claims Medium 3.5 "scores ahead of Devstral 2 and models like Qwen3.5 397B A17B" on SWE-Bench Verified, with no independent verification available. Source: Mistral AI – Vibe Remote Agents Mistral Medium 3 5

Leanstral 1.5 (Formal Reasoning, published July 2)

Leanstral 1.5 also uncovered 5 previously unknown bugs across 57 open-source repositories tested, including an integer overflow in the datrs/varinteger library's sign function for zigzag decoding. Source: Mistral AI – Leanstral 1 5

Robostral Navigate (Robotics, not coding)

Robostral Navigate is not a coding model and has no published SWE-Bench or coding-relevant scores. Source: Mistral AI – Robostral Navigate

Note: OpenAI stopped using SWE-Bench Verified due to contamination concerns. Cross-provider comparisons on that benchmark should be treated with caution.

Latest News

Regional Inference Endpoints now live (July 2026)

The API pricing page now displays "Regional Inference Endpoints are now live!" The EU endpoint (api.eu.mistral.ai) routes requests to multiple data centers in EU/EFTA countries, guaranteeing inference occurs within the region. The US endpoint (api.us.mistral.ai) is listed as "Coming soon." Regional inference costs 1.1x standard pricing (10% upcharge). Limitations include: only Function Calling is supported for tools (no other agent tools), stateful features (Agents, Batch, Files API) are not available, and available models vary by region. This partially fulfills the EU data-residency promise that was tied to the Les Ulis data center (previously announced for Q3 2026). Source: Mistral AI – Regional Inference

Robostral Navigate (July 8, 2026)

Mistral released Robostral Navigate, an 8B embodied navigation model that enables robots to autonomously navigate complex environments using a single RGB camera (no LiDAR or depth sensors). It achieves 76.6% on R2R-CE validation unseen, beating the best single-camera approach by 9.7 points and the best multi-sensor approach by 4.5 points. Built entirely in-house using simulated data (2.4 million trajectories across 350K scenes). Uses a pointing-based navigation paradigm with reinforcement learning (CISPO algorithm). No API pricing, endpoint, or open-weights release is listed. The HackerNews thread reached 488 points and 112 comments. Sources: Mistral AI – Robostral Navigate , News – Item

Leanstral 1.5: Proof Abundance for All (July 2, 2026)

The detailed Leanstral 1.5 blog post was published July 2, providing the benchmarks, training methodology, and code-verification case studies that were missing from the June 30 launch. Key claims: saturates miniF2F completely (100%), solves 587/672 PutnamBench problems, achieves state-of-the-art on FATE-H (87) and FATE-X (34). The model uncovered 5 previously unknown bugs across 57 tested repositories. Weights are on Hugging Face under Apache 2.0, and a free API endpoint is available as leanstral-1-5. Training used three stages: mid-training, supervised fine-tuning, and reinforcement learning with CISPO. Source: Mistral AI – Leanstral 1 5

Studio: Prompts and Skills versioning (July 9, 2026)

Studio now provides a system of record for AI prompts and skills, with immutable versions, rollback, clear ownership, classification labels, and audit logs. The feature targets enterprises that need governed, traceable prompt management across teams. Source: Mistral AI – Manage Prompts And Skills In Studio

Microsoft "multibillion-dollar" deal reported (July 21, 2026)

France24 reported that Microsoft struck a "multibillion-dollar" deal to expand Mistral. The article returned HTTP 403 to standard fetching, and the HackerNews discussion (46 points, 15 comments) could not be extracted due to rate-limiting. The exact deal value, structure, and scope remain undisclosed. Source: France24 – 20260721 Microsoft Strikes Multi Billion Dollar Deal To Expand France Ai Firm Mistral ; News – Item

No July update on Les Ulis and industrial partnerships

There was no July news on the Les Ulis 10 MW data center beyond the Regional Inference Endpoints launch, or on the Airbus, BMW, and ASML industrial partnerships announced at the May 28 AI Now Summit. Source: Mistral AI – News

Community Signals

Robostral Navigate thread (488 points, 112 comments): strategy and niche-model debate

The most-engaged July Mistral discussion came from the Robostral Navigate launch thread. While the model is not a coding tool, the community discussion centered on whether Mistral's pivot toward niche, domain-specific models (robotics, OCR, formal verification) is a viable alternative to the frontier-model race.

• Gecko4072: "Mistral seems to be going wide and niche. Could be a smart strategy going forward." News – Item
• tootie: "It's potentially a great strategy. They can't keep up with Antropic and OpenAI in pure horsepower, but there's just tons of applications for which you don't need that much power and it's better to optimize for speed and energy." News – Item
• baq: "I expect the bitter lesson to continue to be bitter. Mistral must at least attempt to catch up to SOTA 6 months ago." News – Item
• fmind-dev: "I wonder how Mistral will prioritize its robotic development against its LLM development. We have either players that prioritize both (Google, AMI), or players that prioritize coding and agentic (OpenAI, Anthropic, ...)." News – Item
• jonash54: "Producing specific niche models for 100 year old industries that have mountains of data and warehouses full of folders will be the european take on AI. It may come late but it'll be safe and reliable. It also requires a lot of OCR." News – Item
• cyberax: "We are making a niche model that we're now expanding. You'd be surprised how the general models suck for anything vision-related. And even if you use all the tricks in the book to make them work for you, the cost can easily be 1000 times more than the specialized model." News – Item
• YeGoblynQueenne (critical of benchmarks): "R2R-CE is a benchmark consisting of simulated environments. So what this means is that beating this benchmark is about as useful as getting a robot to play Minecraft, or some other video game. Great, but a robot must run in the real world, in physical reality: not in a digital environment." News – Item
• HanClinto (on access): "Right now, Mistral AI's official announcement and documentation are primarily focused on enterprise and industrial partnerships (think Airbus, BMW, etc.). [...] There's no public hobbyist/non-commercial license or open-source release mentioned yet. Mistral's current messaging is all about 'talk with our team', which implies a commercial-first approach." News – Item
• duchenne (Mistral employee, confirming map-less navigation): "I am working in Mistral robotics team. I confirm this is map-less. The only inputs are the text prompt and the front camera rgb image." News – Item
• mil22 (on the failure rate): "I would like to know what it did the other 23.4% of the time!" News – Item

Reddit

Reddit's r/MistralAI could not be accessed via the JSON endpoint due to bot detection (HTTP 403). No Reddit community signals were extracted for July.

Microsoft-Mistral deal (46 points, 15 comments)

The HackerNews thread for the France24 report on the Microsoft-Mistral deal (item 49003810) could not be extracted due to rate-limiting (HTTP 429) and subsequent browser redirect. The article itself returned HTTP 403. The 15-comment discussion was not accessible for quotes. Source: News – Item

Enterprise Readiness

Terms explained:

• Data residency - the ability to specify which geographic region processes and stores your data. Mistral's new EU Regional Inference endpoint (api.eu.mistral.ai) guarantees inference within EU/EFTA data centers. Source: Mistral AI – Regional Inference
• Regional inference - API endpoints that route requests to models hosted in a specific geographic region. Billed at 1.1x standard pricing. Limitations: no Agents, Batch, or Files API on regional endpoints. Source: Mistral AI – Regional Inference

Transparency Gaps