Model page
Grok 4.3
xAI's latest flagship Grok model with 1M context, image input, configurable reasoning, and strong agentic tool use.
Key dates
We use concrete dates and keep them consistent across the site.
Capability
Intelligence
High
Capability
Speed
Medium
Capability
Context window
1,000,000 tokens
API
Supported endpoints
v1/chat/completions · v1/responses · v1/batch
Modalities
Input and output
Input: Text, Image
Output: Text
Features
Availability notes
10M TPM · 1,800 RPM · Cached input: $0.20 / 1M tokens · Higher context pricing applies above 200K context · Configurable reasoning: none, low, medium, or high; defaults to low · Structured outputs, web search, X search, function calling, and code execution supported
ChatGPT
GPT‑4o retirement (ChatGPT)
OpenAI is retiring GPT‑4o inside ChatGPT on February 13, 2026. This does not automatically imply API removal.