Grok 4.20 0309 Reasoning
xAI
- Context window
- 1M 1,000,000 tokens
- Input / Output
- image, text → text
API pricing
USD / 1M tokens
| Input length | Input | Output | Cached input |
|---|---|---|---|
| Input ≤ 199,999 tokens | $1.25 | $2.50 | $0.20 |
| Input > 199,999 tokens | $2.50 | $5.00 | $0.40 |
Thresholds include all input tokens, including cache hits.
Calculate your workloadEvidence links
- Input
- $1.25Input ≤ 199,999 tokens
- $2.50Input > 199,999 tokens
- Output
- $2.50Input ≤ 199,999 tokens
- $5.00Input > 199,999 tokens
- Cached input
- $0.20Input ≤ 199,999 tokens
- $0.40Input > 199,999 tokens
Input / output price · USD / 1M tokens
| Model | Evidence links | Input / output price |
|---|---|---|
grok-4.20-0309-reasoningbatch | xai API route unavailable | $1.00 (Input ≤ 199,999 tokens); $2.00 (Input > 199,999 tokens) / $2.00 (Input ≤ 199,999 tokens); $4.00 (Input > 199,999 tokens) |
grok-4.20-0309-reasoningstandard | xai | $1.25 (Input ≤ 199,999 tokens); $2.50 (Input > 199,999 tokens) / $2.50 (Input ≤ 199,999 tokens); $5.00 (Input > 199,999 tokens) |
Specifications
Grok 4.20 0309 Reasoning is a model from xAI, first recorded on 7 Oct 2026; its release date is not established. The context window is 1,000,000 tokens. Pricing is $1.25 (Input ≤ 199,999 tokens); $2.50 (Input > 199,999 tokens) per million input tokens and $2.50 (Input ≤ 199,999 tokens); $5.00 (Input > 199,999 tokens) per million output tokens.
- Context window
- 1,000,000
- Input
- image · text
- Output
- text
- Input · USD / 1M tokens
- $1.25 (Input ≤ 199,999 tokens); $2.50 (Input > 199,999 tokens)
- Output · USD / 1M tokens
- $2.50 (Input ≤ 199,999 tokens); $5.00 (Input > 199,999 tokens)
- Cached input · USD / 1M tokens
- $0.20 (Input ≤ 199,999 tokens); $0.40 (Input > 199,999 tokens)
Questions
What is the context window of Grok 4.20 0309 Reasoning?
The context window is 1,000,000 tokens.
How much does Grok 4.20 0309 Reasoning cost?
Pricing is $1.25 (Input ≤ 199,999 tokens); $2.50 (Input > 199,999 tokens) per million input tokens and $2.50 (Input ≤ 199,999 tokens); $5.00 (Input > 199,999 tokens) per million output tokens. Cached input is $0.20 (Input ≤ 199,999 tokens); $0.40 (Input > 199,999 tokens) per million.
When was Grok 4.20 0309 Reasoning released?
Its release date is not established. Signal Forge first recorded it on 7 Oct 2026.