Anthropic raises $13B at $183B Series F

**Anthropic** achieved a **$183B post-money valuation** in Series F funding by September 2025, growing from about $1B run-rate in January to over **$5B run-rate** by August 2025. Their **Claude Code** product saw **>10x usage growth** in three months and reached **$500M run-rate revenue**, serving over **300,000 business customers** with a nearly **7x increase in large accounts**. **Mistral AI** launched **Le Chat** with 20+ MCP connectors integrating with major SaaS platforms and persistent memory features. Benchmarking updates highlight **GPT-5** leading agent intelligence indices, with strong performances from **xAI's Grok** and **Anthropic's Claude** families. Reliability tooling and agent evaluation advances were shared by **Galileo**, **OpenPipe**, and others. **Zhipu/THUDM** open-sourced **Slime v0.1.0**, enhancing RL infrastructure behind **GLM-4.5** with significant decoding speed improvements and advanced tensor offload techniques.