Grok-4.20 Beta Reasoning: Benchmarks, Pricing & Context Window
Grok-4.20 Beta Reasoning is a language model from xAI, released in March 2026, with multimodal input.
Grok 4.20 Beta Reasoning is xAI's reasoning-optimized variant of the Grok 4.20 model family. Released as a beta on March 9, 2026, it uses thinking tokens for enhanced chain-of-thought reasoning, featuring a 2 million token context window
Grok-4.20 Beta Reasoning pricing
Providers
Grok-4.20 Beta Reasoning starts at $2.00 per million input tokens and $6.00 per million output tokens via xAI.
| Provider | Input $/M | Output $/M | Max Input | Max Output | Latency s | Throughput | Quant | Input | Output |
|---|---|---|---|---|---|---|---|---|---|
 xAI | $2.00 | $6.00 | 2.0M | 30.0K | — | — | — |
Grok-4.20 Beta Reasoning API
API access coming soon
Grok-4.20 Beta Reasoning will be available through our gateway shortly.
Grok-4.20 Beta Reasoning examples
Recent arena outputs from Grok-4.20 Beta Reasoning, picked from the highest-ranked matchups.
Grok-4.20 Beta Reasoning license
Grok-4.20 Beta Reasoning is released under the Proprietary license, which restricts commercial use.
- License
- Proprietary
- Non-commercial
Proprietary license - usage restrictions apply
FAQ
Common questions about Grok-4.20 Beta Reasoning.