Grok 4.20: API pricing, providers and specs
Grok 4.20 is a text model by xAI. 3 providers serve it, from $2.50 to $6 /1M; the lowest price is at APIYI.
How Grok 4.20 compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $2.50 /1M, its lowest price is above 68% of comparable models (median $1.10).
- Its 1M-token context window is larger than 67% of them (median 262K), about 1500 pages of text.
- 3 providers serve it; 52% of comparable models have fewer.
Grok 4.20 prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
 APIYI | $1.25/1M | $2.50/1M | — | — |
 FastRouter | $1.25/1M | From$2.50/1M | $0.20/1M | 2M |
 Prime Inference | $2/1M | $6/1M | — | — |
- APIYI$2.50
- FastRouterFrom$2.50
- Prime Inference$6
Specs
- Type
- Text
- Maker
- xAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 1M≈ 1500 pages of text
- Max output
- —
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- Mar 12, 2026
- License
- proprietary
- Open weights
- No, API only
- Monthly searches
- 15K
Alternatives to Grok 4.20
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Grok 4.20this model | $2.50/1M | 1M | — | 3 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
 Gemini 3 Flash | $2.40/1M | 1.05M | 1466 | 5 |
 Mistral Large 4 | $2.09/1M | 1.05M | 1543 | 13 |
 Muse Spark 1.3 | $4.25/1M | 1.05M | 1657 | 11 |
 Sonar | $1/1M | 127K | — | 9 |
| GLM-5.2 | $1.80/1M | 1M | 1604 | 44 |
| Gemini 3.8 Flash | $3/1M | 1.05M | 1585 | 30 |
More from xAI
Grok 4.20 FAQ
The lowest price for Grok 4.20 is $2.50 /1M, at APIYI.
APIYI, at $2.50 /1M. 3 providers serve Grok 4.20; the table above lists every one with its price.
Grok 4.20 reads up to 1M tokens per request.
No. Grok 4.20 is only available through an API; xAI does not publish its weights.
3 API providers serve Grok 4.20. Compare their prices above, or open a provider to see everything it offers.
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