SpaceXAI: Grok 4.20
x-ai/grok-4.20
PaidTool callingVision inputReasoning
Price Published
- Input
- $1.25 per million tokens
- Output
- $2.50 per million tokens
Optional features and fallback routes can cost extra. Confirm current terms with the provider.
Specifications Published
- Context window
- 2,000,000 tokens
- Max output
- 1,800,000 tokens
- Tool calling
- Supported
- Vision input
- Supported
- Reasoning
- Supported
- Knowledge cutoff
- Sep 1, 2025
- Listed since
- Mar 31, 2026
Measured by the Club Signed cheapoS reports
Not yet observed No signed request reports for this exact route yet. Missing reports aren't a failure or a zero.
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About this model OpenRouter description
Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
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Catalog data from the OpenRouter model catalog, retrieved Sep 29, 2026, 12:37 PM UTC. A listing isn't a live availability check.