Context Window
2,000,000
Input tokens
Full-context input ≈ $4.00
Model Cost Profile
Developer: x-ai· Tokenizer: Grok
Pricing updated Apr 1, 2026
Grok 4.20 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](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens)
Context Window
2,000,000
Input tokens
Full-context input ≈ $4.00
Max Output
—
Not specified
Input Price / 1M
$2.00
Prompt tokens
Output Price / 1M
$6.00
Completion tokens
Top Benchmark
Pending
No benchmark data yet
Price History
Not enough data yet. Price tracking started recently — check back in a few days.
Performance History
Not enough data yet. Performance tracking started recently — check back in a few days.
| Usage Type | Price / 1M Tokens |
|---|---|
| Input (Prompt) | $2.00 |
| Output (Completion) | $6.00 |
| Cache Read | $0.2000 |
| Web Search | $5,000.00 |
Estimate monthly spend for xAI: Grok 4.20 based on your workload.
Estimated Monthly Cost
$122
25M input + 12M output tokens
Quick links for cost-down decisions before production rollout.