Compare

Grok 4.20 Reasoning — and what?

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 1 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

Search1/4
Grok 4.20 Reasoning
xai/grok-4.20-0309-reasoning
Provider
xAI
Family
Grok 4
Modality
text
Context window
2,000,000 tok
Max output
4,096 tok
Released
2026-05-22
License
Proprietary
Input price
$2.00 /1M
Output price
$6.00 /1M
Tools
Streaming
yes
Vision
JSON mode
Reasoning
Prompt caching
Batch API
Try it
Open in playground →
Grok 4.20 Reasoning
xai/grok-4.20-0309-reasoning
Full spec →

xAI's Grok 4.20 reasoning model. Uses extended thinking to work through complex problems, returning a reasoning trace alongside the final answer.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Compare with another

Grok 4 Fast vs Grok 4.20 Reasoning
xai/grok-4-fast · xai/grok-4.20-0309-reasoning
Grok 4 vs Grok 4.20 Reasoning
xai/grok-4 · xai/grok-4.20-0309-reasoning
Grok 4.20 Multi-Agent vs Grok 4.20 Reasoning
xai/grok-4.20-multi-agent-0309 · xai/grok-4.20-0309-reasoning
Grok 4.20 Non-Reasoning vs Grok 4.20 Reasoning
xai/grok-4.20-0309-non-reasoning · xai/grok-4.20-0309-reasoning
Grok 4.20 Reasoning vs Grok 4.3
xai/grok-4.20-0309-reasoning · xai/grok-4.3