Grok 4.20
active Active
Grok 4.20 is an active xAI LLM API model. As of May 24, 2026 it has no announced deprecation or retirement date.
Lifecycle & specs
- Provider
- xAI
- API model ID
grok-4.20- Status
- active
- Released
- Mar 10, 2026
- Replacement
xai/grok-4-3- Context window
- 2,000,000 tokens
- Input price
- $1.25 / 1M tokens
- Output price
- $2.50 / 1M tokens
- Knowledge cutoff
- 2025-09-01
- Pricing checked
- May 22, 2026
Source: official xAI documentation ↗ · ✓ verified