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Mistral open-sources weights for Large 4 'Le Chonk' trillion-parameter model

Mistral has released the open weights of Mistral Large 4, its flagship 1-trillion-parameter multimodal model, following a public preview earlier this month. The company says added reinforcement learning has improved coding, cybersecurity and reasoning efficiency since preview, and the model now ranks as the top open-weight model for coding among the most capable open models overall.

Mistral releases open weights for Large 4 'Le Chonk' with improved coding scores

Mistral has published the full weights for Mistral Large 4, the trillion-parameter model nicknamed 'Le Chonk' that first appeared in preview on Oct. 6. New benchmark results show its score on the Terminal-Bench 4.0 coding test rising from 28% to 41%, putting it slightly ahead of GLM-5.3 on that metric, though GLM-5.3 and Codex GPT-6.1 Terra still edge it out on Artificial Analysis's overall composite index. Mistral also says the model uses 47% fewer tokens per task on average than comparable open models.

Mistral open-sources weights for trillion-parameter Large 4 model

Mistral has released the downloadable weights for Mistral Large 4, a trillion-parameter open-weight AI model nicknamed 'Le Chonk,' letting businesses and governments deploy the system on their own infrastructure. The company says it matches the performance of China's GLM-5.3 while using 47% fewer tokens per task, and claims it leads all open models on Artificial Analysis' Coding Agent Index.

Mistral releases final version of open-weight model Le Chonk, claims coding and security lead

French AI company Mistral has released the finalized version of its trillion-parameter model, nicknamed Le Chonk, freely to the public. The company says the model now outperforms open-weight offerings from Chinese labs like DeepSeek and Z.ai on coding and cybersecurity tasks, achieved by training it on progressively harder security and coding problems. Mistral VP of science Pierre Stock announced the claims during a press briefing.

US AI firms raised $356B in H1 2026, more than 8x Europe's $42B

A new analysis cites AI Weekly data showing American AI companies pulled in $355.9 billion of venture funding in the first half of 2026, compared with roughly $42 billion raised by European AI startups over the same period. The author, an AI engineer building the French startup ChatMakr, argues this funding gap, combined with France's exit tax on unrealized startup gains, is a key driver behind European founders relocating to the US.

Jensen Huang: Neocloud demand strong but capital shortage limits growth

Nvidia CEO Jensen Huang told CNBC at the GTC conference in Berlin that demand for neocloud providers is extremely high, but a shortage of working capital is restraining their expansion. He said demand for capital far exceeds its availability, though he expects the imbalance to resolve over time. Huang also pointed to energy scarcity in Europe as a key constraint, naming Nebius and Mistral as firms whose growth depends on securing power allocation.

Mistral launches Voxtral 3 voice agent models and SDK

Mistral AI has released Voxtral 3, a family of speech-to-text and text-to-speech models paired with a voice agent SDK that combines listening, reasoning, tool-calling and speaking in one real-time pipeline. The system supports over 50 languages and is designed for multi-step conversational tasks like contact-center support and hands-free assistants. It's available through Mistral's EU-hosted API or for self-deployment on customer infrastructure.

CERN and Mistral to build foundation model for particle physics

CERN and French AI company Mistral have signed a statement of intent to form a long-term partnership developing foundation models for scientific research. Their first project is a single pretrained Large Physics Model, trained on billions of simulated proton-proton collisions from the Large Hadron Collider, intended to handle multiple analysis tasks such as particle reconstruction, identification and anomaly detection.

Mistral launches Timestral, a family of time-series forecasting models

Mistral has released Timestral, its first family of time-series foundation models, with sizes ranging from 5M to 209M parameters. The company says its largest 209M-parameter model tops all three major public benchmarks—GIFT-Eval, TIME, and fev-bench—surpassing previous state-of-the-art models that used more parameters. The models produce probabilistic, multivariate forecasts and support both past and known-future covariates, with fine-tuning available through Mistral Forge.

ASML posts record $13 billion quarter, warns lithography demand will outstrip supply through 2028

ASML reported third-quarter 2026 revenue of $13.06 billion, up 55% year-over-year, with a record gross margin of 57.5% and operating income of $5.79 billion. The company sold 121 lithography systems in the quarter, with EUV and DUV tools split roughly evenly in revenue, and said it now expects customer demand to exceed its production capacity in 2027 and 2028.

Mistral Large 4 ranks top outside US/China, lags Chinese open models overall

Mistral released Large 4, a trillion-parameter mixture-of-experts model, in a research preview this week, with full weights due at the end of October. Independent benchmarking firm Artificial Analysis scored it 38 on its Intelligence Index, making it the top model from outside the US and China, though several Chinese open models including DeepSeek V4.1 Flash and MiMo-V2.6-Pro scored as high or higher overall. Large 4 scored 50 on Artificial Analysis's Cyber Index, tying GLM-5.3-Flash, and hit 82% on the CyberGym-E2E-AA cybersecurity test, its best individual result.

Anthropic, Google and Mistral roll out new AI models within days of each other

Anthropic released Claude Haiku 5.5 and Claude Sonnet 5.5, upgrades to its fast and affordable model lines, with Haiku costing about 75% less to run than its predecessor while improving performance on coding, visual reasoning and agentic tasks. Sonnet 5.5 brings similar efficiency gains along with upgraded alignment and cybersecurity safeguards. Google and Mistral AI also released new models in the same week, part of a broader wave of updates across the industry.