[Action required] - Grok 4.3 release and xAI API model retirement

Grok 4.3 release and xAI API model retirement Hi, Grok 4.3 is now available in the API. It’s the fastest, most intelligent model we’ve ever built, and tops leaderboards in agentic tool calling and instruction following. Some highlights: 1 million token context window Priced at $1.25 / 1m input and $2.50 / 1m output Supports 3 reasoning efforts (low, medium, and high) As we continue advancing Grok, we’re retiring several earlier models to focus fully on our newest generation. Effective May 15, 2026 at 12:00pm PT, the following models will be retired from the xAI API: grok-4-1-fast-reasoning grok-4-1-fast-non-reasoning grok-4-fast-reasoning grok-4-fast-non-reasoning grok-4-0709 grok-code-fast-1 grok-3 grok-imagine-image-pro After May 15, 2026, requests to these models will no longer work. We know transitions like this can be disruptive, and we truly appreciate your understanding as we make this shift. We have some exciting model releases planned in the coming weeks, and we're making this change so we can invest fully in building the next generation of models! To help with the transition: For reasoning workloads, we recommend migrating to grok-4.3. For non-reasoning workloads, we recommend grok-4.20-non-reasoning. For image generation, we recommend migrating to grok-imagine-image. We’re here to support you through this migration, and please don’t hesitate to reach out to support@x.ai anytime for assistance. Thank you for building with xAI. We can’t wait to see what you build with our latest models. So long, and thanks for all the fish, The xAI Team © 2026 X.AI LLC For questions contact support@x.ai