xAI: Grok 4.20 Beta
Analysis Summary
xAI: Grok 4.20 Beta sits in the Emerging tier on our leaderboard, ranked #281 of 523 published models on overall intelligence. At $2.00 input and $6.00 output per 1M tokens, it is among the most expensive on the market. It offers an exceptionally large context window suited to long-document workflows and supports tool use, function calling, vision, and reasoning.
Editorial notes
Grok 4.20 Beta from xAI offers a 2M token context window and multimodal capabilities, but lacks published benchmark data — at $2/$6 per million tokens it is expensive for an unverified model, and businesses should await performance data before committing.
Assessed April 23, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses. Reasoning can be enabled/disabled using the reasoning enabled parameter in the API. Learn more in our docs
Capabilities
How does xAI: Grok 4.20 Beta stack up?
Compare side-by-side with other emerging models.
Model Information
| OpenRouter ID |
x-ai/grok-4.20-beta
|
| Provider | x-ai |
| Release Date | March 12, 2026 |
| Context Length | 2,000,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $2.00 | $0.002000 |
| Output | $6.00 | $0.006000 |
Live Performance
Live endpoint metrics — refreshed every 30 minutes.
