xAI API for text generation and chat
A legacy endpoint for text-in, text-out interactions, supporting summarization, creative writing, Q&A, and coding.
Chat Completions is a legacy endpoint offered by xAI for text-based AI interactions.
Summarizing articles, generating creative writing, answering questions, providing customer support, and assisting with coding tasks.
Not specified in source.
https://docs.x.ai/developers/model-capabilities/legacy/chat-completions
The xAI Chat Completions API is a legacy endpoint for text-based AI tasks. It handles inputs and outputs for various applications like summarization, creative writing, and coding assistance.
Provides a programmatic interface to access AI models for a wide range of text generation and understanding tasks.
New features will come to the Responses API first; migration is recommended.
- Completions (Legacy) ↗xAI · xAI Docs: Guides · Aug 24, 2026 · paraphrased
First seen on Subvolts Aug 24, 2026. Updated Sep 11, 2026. Spotted a problem? Tell us.
- Completions (Legacy)xAI · xAI Docs: Guides · Aug 24, 2026
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
- Code snippetTranscribe audio in 25 languages with batch or streaming modesTranscribe audio files or streams into text across 25 languages, supporting batch and real-time processing. · 5 min
- HeuristicProvide conversation history for contextInclude previous prompts and results in new requests to maintain context. · 3 min
- Setting tipEnable streaming output for text generation modelsSet stream to true in your API request to get real-time text generation. · 1 min
- HeuristicUse roles to provide context to the modelSpecify roles like system, user, and assistant to guide model behavior and conversation history. · 5 min
- Safety tipNever expose API keys in client-side codeAlways proxy WebSocket connections through your backend to protect your API keys from exposure. · 10 min
- Code snippetAPI request for multi-agent research with tools and agent countExample API call to grok-4.20-multi-agent specifying model, tools, agent count, and content encryption. · 10 min
Questions people ask
- Which AI tools does this work with?
- The sources used it with Grok.
- Where did this come from?
- xAI (xAI Docs: Guides). Subvolts collected, normalized and credited it; the link above opens the original.