ModelRegistry
Explore text, image, video and speech models
Find the right AI by model, modality and provider.
Browse modelsChoose with facts
Turn the model directory into an actionable evaluation workflow.
Clear capabilities
Review modalities, protocols, limits and status.
Transparent coverage
See which providers expose each model.
Easy comparison
Compare candidates using consistent dimensions.
Start exploring the directory
Begin with a model, provider or organization.
Model spotlight
Grok 4.20
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
Compare modelsCore capabilities
A compact view of the model contract before integration.
Input and output
See supported modalities and generation directions.
Limits and context
Check context, output limits and release details.
Provider coverage
Compare the providers and protocols that expose this version.
Grok 4.20 FAQ
Start building with Grok 4.20
Move from model evaluation to a production-ready workflow.
Model family
Grok
-
Focus areas
Core specifications
Modalities
Identity
- Version
- grok-4.20
- Knowledge cutoff
- 2025-09-01
Capabilities
Capabilities and fit
Model summary
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
- Output
- Text
- Capabilities
- 4
- Catalog updated
- 2026-03-31T00:00:00.000Z
- Status
Provider coverage
| Provider | Input | Output | Pricing |
|---|---|---|---|
| OpenRouter Grok 4.20 | Pricing unavailable | ||
| NanoGPT Grok 4.20 | Pricing unavailable | ||
| Kilo Gateway xAI: Grok 4.20 | Pricing unavailable | ||
| xAI Grok 4.20 | Pricing unavailable |