OpenAI published GPT-5.5-Cyber and Codex safety practices back to back. The coding-agent race is shifting from model quality to permissions, sandboxing, and audit logs.
OpenAI introduced GPT-Realtime-2, GPT-Realtime-Translate, and GPT-Realtime-Whisper for the Realtime API. The launch moves voice AI competition from audio quality toward reasoning, tool use, and operational reliability.
China-based Z.ai released GLM-5.1 under MIT terms and topped SWE-Bench Pro with a 744B MoE coding model, sharpening the open-source versus closed-model split.
Microsoft released MAI-Transcribe-1, MAI-Voice-1, and MAI-Image-2 across speech transcription, voice generation, and image generation, turning its OpenAI backup plan into a product stack.
StepFun Step 3.5 Flash activates only 11B parameters inside a 196B MoE model, posts strong math and coding benchmarks, and ships as Apache 2.0 open weights.