Together AI, November 2026 new features

Messages API and Responses API

Together AI now supports the Anthropic Messages API at POST /v1/messages and the OpenAI Responses API at POST /v1/responses . To run an app built on either API on Together, change its API key, base URL, and model.

• Messages API and Responses API
• Post-training: FP4 preparation for MiniMax M3.1 Flash

Post-training: GLM-5.3 Flash

zai-org/GLM-5.3-Flash is available for post-training : LoRA training on B200-SXM , a 159,744-token training context, a 163,840-token generator context, rank up to 32, and up to five adapter sessions per resource. The cookbook renders its prompts with the GLM codec.