Grok 4.3
LLMLLMReasoningReasoning
Cheaper, faster xAI developer model (100 tok/s, 1M context, reasoning included in token price), released May 2, 2026. Pareto frontier: $1.25/$2.50 per million tokens.
Technical specification
Context window
License
Tools
Fine-tuning
Weights access
Knowledge cutoff
Last updated: May 7, 2026
Modalities
Input
Text
Output
Text
Capabilities
6Reasoning★
Reasoning
Multi-step reasoning★
Reasoning
Coding★
Coding
Long context★
Reasoning
Planning★
Planning
Structured output★
Structured gen.
