Model Library
xAIReleased April 7, 2026Grok 4.20 0309 v2
xAI · Released April 7, 2026
Intelligence score
37
At a glance
- Intelligence
- 37
- Speed
- 175.4tokens/sec
- Latency
- 12.28stime to first token
- Input price
- $2.00per 1M tokens
- Output price
- $6.00per 1M tokens
- Context window
- 4tokens
- Parameters
- —
Summary
Comparison summary
Grok 4.20 0309 v2 (Reasoning) scores 37 (estimated) on the Artificial Analysis Intelligence Index, placing it well above average among other reasoning models in a similar price tier (median: 28). Grok 4.20 0309 v2 (Reasoning) generates output at 175.4 tokens per second (based on xAI's API), which is well above average compared to other reasoning models in a similar price tier (median: 81.2 t/s). Grok 4.20 0309 v2 (Reasoning) costs $2.00 per 1M input tokens (somewhat higher than average, median: $1.50) and $6.00 per 1M output tokens (better than average, median: $8.40), based on xAI's API.
Specifications
Technical specifications
| Model name | Grok 4.20 0309 v2 |
|---|---|
| Provider | xAI |
| Release date | April 7, 2026 |
| Intelligence score | 37 |
| Speed | 175.4 tokens/sec |
| Latency (TTFT) | 12.28s |
| Input price | $2.00 / 1M tokens |
| Output price | $6.00 / 1M tokens |
| Context window | 4 tokens |
| Parameters | — |
| Reasoning | Yes |
| Input modalities | text, image |
| Output modalities | — |
| Open weights | No |
| License | — |
| API availability | — |
| Source | Model Intelligence legacy profile: grok-4-20 |
Pricing
Token prices
Price per 1M tokens
Grok 4.20 0309 v2, as listed in the catalog record
- Input$2.00
- Output$6.00
| Token type | Price per 1M |
|---|---|
| Input | $2.00 |
| Output | $6.00 |
Model Intelligence legacy profile: grok-4-20
FAQ · 18
Frequently asked questions
Grok 4.20 0309 v2 (Reasoning) was released on April 7, 2026.
Grok 4.20 0309 v2 (Reasoning) was created by xAI.
Grok 4.20 0309 v2 (Reasoning) scores 37 (estimated) on the Artificial Analysis Intelligence Index, placing it well above average among other reasoning models in a similar price tier (median: 28).
Grok 4.20 0309 v2 (Reasoning) generates output at 175.4 tokens per second (based on xAI's API), which is well above average compared to other reasoning models in a similar price tier (median: 81.2 t/s).
Grok 4.20 0309 v2 (Reasoning) has a time to first token (TTFT) of 12.28s (based on xAI's API), which is somewhat higher than average compared to other reasoning models in a similar price tier (median: 2.78s).
Grok 4.20 0309 v2 (Reasoning) costs $2.00 per 1M input tokens (somewhat higher than average, median: $1.50) and $6.00 per 1M output tokens (better than average, median: $8.40), based on xAI's API.
Grok 4.20 0309 v2 (Reasoning) costs $2.00 per 1M input tokens and $6.00 per 1M output tokens (based on xAI's API). For a blended rate (7:2:1 cache hit/input/output ratio), this is $1.14 per 1M tokens. Pricing may vary by provider.
Yes, Grok 4.20 0309 v2 (Reasoning) is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
Grok 4.20 0309 v2 (Reasoning) supports text and image input.
Grok 4.20 0309 v2 (Reasoning) supports text output.
Yes, Grok 4.20 0309 v2 (Reasoning) supports image input and can analyze, describe, and answer questions about images.
Yes, Grok 4.20 0309 v2 (Reasoning) is multimodal. It can process text and image input and generate text output.
Grok 4.20 0309 v2 (Reasoning) has a context window of 2.0M tokens. This determines how much text and conversation history the model can process in a single request.
No, Grok 4.20 0309 v2 (Reasoning) is proprietary. The model weights are not publicly available.
Grok 4.20 0309 v2 (Reasoning) is a proprietary model and xAI has not disclosed the model size or parameter count.
Grok 4.20 0309 v2 (Reasoning) achieves a score of 37 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
Yes, Grok 4.20 0309 v2 (Reasoning) is available via API through 2 providers.
Grok 4.20 0309 v2 (Reasoning) is available through 2 API providers.