Major Release xAI · Released
Grok 4.3
What is Grok 4.3?
Grok 4.3 is a Major Release AI model from xAI, released on April 30, 2026. It has a 1M tokens context window, costs $1.25 per million input tokens, and scores 97.7% on TAU2-bench. It is available via the company's API.
xAI Grok 4.3 — 1M tokens context, reasoning model.
How much does Grok 4.3 cost?
| Metric | Price |
|---|---|
| input per mtok | $1.25 |
| output per mtok | $2.50 |
| cache read per mtok | $0.20 |
Pricing data verified .
What context window does Grok 4.3 have?
- Context window
- 1M tokens
- Max output
- 131K
- Input modalities
- text, image
- Output modalities
- text
How does Grok 4.3 score on benchmarks?
| Benchmark | Score |
|---|---|
| GPQA Diamond | 90.1% |
| HLE | 35.0% |
| SciCode | 47.3% |
| TAU2-bench | 97.7% |
| TerminalBench-Hard | 37.9% |
| IF-Bench | 81.3% |
| LiveCodeBench Reasoning | 64.3% |
Benchmark scores verified .