Machine Learning

Google's race to catch up in AI-assisted coding may have a new contender — and it is not the model everyone is waiting for. Business Insider reported this week that Google employees are internally testing a Gemini 4 variant codenamed Carbon, and early feedback suggests it could be the strongest coding model the company has built.

CoreWeave built its reputation selling raw AI compute. Now it wants to sell the software layer on top of it. At its Fully Connected conference, the company unveiled CoreWeave Forge, a development platform that folds model serving, observability, post-training, and evaluation into a single environment — and it comes with a striking performance claim: a preview feature called RL Rollouts that improved model reload latency by 15x in testing.

French AI lab Mistral has launched Mistral Large 4, a 1.05-trillion-parameter natively multimodal model the company has nicknamed "le Chonk," now available in public preview via API. Open weights are promised by the end of October, after a red-teaming phase.

Anthropic released Claude Haiku 5.5 on Wednesday, the third launch in the Claude 5.5 family after Opus 5.5 and Sonnet 5.5 earlier this fall. Where the bigger siblings brought capability, Haiku 5.5 brings aggression: Anthropic calls it the cheapest, fastest, and most capable small model it has ever shipped, and the pricing backs up the claim.