Calculate the cost of using grok-4.20-0309-reasoning from xAI for your AI applications
Pricing data last updated:
Mode: Chat
Max: 2,000,000 tokens
Max: 2,000,000 tokens
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grok-4.20-0309-reasoning is a chat model from xAI, one of 38 chat models they offer. It is priced at $1.25 per 1M input tokens and $2.50 per 1M output tokens, ranking 1637 out of 2292 chat models by cost and cheaper than 28% of models in this category. grok-4.20-0309-reasoning supports vision, function calling, reasoning, web search — one of only 2 chat models with this combination. Its 2,000K-token context window is in the top 1% among chat models.
Note: Use the interactive calculator above to estimate costs for your specific usage patterns.
Use the maximum token limits shown above to understand the model's capacity. This model can handle up to 2,000,000 input tokens. The maximum output length is 2,000,000 tokens.
At $1.25 per 1M input tokens and $2.50 per 1M output tokens, grok-4.20-0309-reasoning ranks 1637 out of 2292 chat models by input cost. It is more expensive compared to the median of $0.55 for chat models, and is cheaper than 28% of models in this category.
grok-4.20-0309-reasoning is one of 38 xAI chat models, one of only 2 chat models combining function calling, reasoning, vision, web search. its 2,000K-token context window places it in the top 1% of chat models.
| Model | Provider | Input / 1M tokens | Output / 1M tokens | vs grok-4.20-0309-reasoning |
|---|---|---|---|---|
| gemini-2.5-pro | Vertex AI | $1.25 | $10.00 | 0% |
| gemini-3.5-flash | Vertex AI | $1.50 | $9.00 | +20% |
| gemini-2.5-pro | Google Gemini | $1.25 | $10.00 | 0% |
Similar chat models from other providers
No. grok-4.20-0309-reasoning costs $1.25 per 1M input tokens while gemini-2.5-pro costs $1.25 per 1M input tokens, making gemini-2.5-pro 0% more affordable for input. However, grok-4.20-0309-reasoning may offer different capabilities or performance characteristics that justify the price difference.
grok-4.20-0309-reasoning input pricing is $1.25 per 1M tokens, which is 127% above the median of $0.55 for chat models. It ranks 1637 out of 2292 chat models by input cost, making it cheaper than 28% of models in this category. For output, it costs $2.50 per 1M tokens compared to the median of $1.50.
Among xAI's 38 chat models, grok-4.20-0309-reasoning ranks 17 by input cost. Its combination of function calling, reasoning, vision, web search is shared by only 1 other chat model.
The most comparable chat models to grok-4.20-0309-reasoning are: gemini-2.5-pro from Vertex AI ($1.25/1M input tokens); gemini-3.5-flash from Vertex AI ($1.50/1M input tokens); gemini-2.5-pro from Google Gemini ($1.25/1M input tokens); gemini-3.5-flash from Google Gemini ($1.50/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library.
grok-4.20-0309-reasoning supports up to 2,000,000 input tokens, placing it in the top 1% of chat models by context window size (rank 18 of 2159). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories.
grok-4.20-0309-reasoning is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $1.25 and generating 1M output tokens costs $2.50.
