Grok 4.3 API pricing
As of October 16, 2026, Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens on the xAI API. Cached input is $0.20 per million.
It is the 4th cheapest of 7 Grok models tracked here, by blended price. The closest Standard-tier model from another provider is Gemini 3.6 Flash (Google) at $0.75 / $3.75; Grok 4.3 is 4% more expensive. Same list price as Grok 4.20. First listed in the LiteLLM price data on May 7, 2026. Prompts longer than 200K tokens are billed at $2.50 input / $5.00 output.
Input / 1M tokens$1.25
Output / 1M tokens$2.50
Context window1M
Max output1M
Every published rate
| Rate | Per 1M tokens |
|---|
| Input (standard) | $1.25 |
| Output (standard) | $2.50 |
| Cached input (read) | $0.20 |
| Batch input | $1.00 |
| Batch output | $2.00 |
| Input, prompts over 200K tokens | $2.50 |
| Output, prompts over 200K tokens | $5.00 |
What it costs in practice
| Task | Tokens | Per request | Per 1,000 requests |
|---|
| Chatbot reply | 1,000 in / 500 out | $0.0025 | $2.50 |
| Summarize a long document | 20,000 in / 1,000 out | $0.03 | $27.50 |
| Coding agent step | 50,000 in / 2,000 out | $0.07 | $67.50 |
Standard rates, no caching or batch discount; prompts over 200K tokens are billed at the higher long-prompt rate. Compare your own numbers across all models →
Price history
| Date | Model | Change |
|---|
| 2026-05-07 | Grok 4.3 | New model listed: $1.25 in / $2.5 out source |
Dates are when each change first appeared in the LiteLLM price data, usually within days of the provider's announcement.
Details
| Provider | xAI |
| Price tier | Standard |
| Features | Vision, Reasoning, Prompt caching, Tool use, Web search |
| API model names | grok-4.3, grok-4.3-latest |
| Official pricing | api.x.ai |
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