xAIGrok 4.3 pricing
$1.25 per 1M input tokens and $2.50 per 1M output tokens. In real work that is 0.45¢ per chat answer and 2.0¢ to summarize a 20-page PDF.
Official price at xAI: $1.25 / $2.50 per 1M, cached $0.20 (source, verified Oct 18, 2026).
What Grok 4.3 costs per task
Token counts estimated from a measured model of the same lab (Grok 4.7), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 0.45¢$4.53 / 1,000 | 1,280 in · 567 out · 603 reasoning | 220 of 336 | estimated |
| Reply to a customer email | 0.27¢$2.69 / 1,000 | 1,492 in · 106 out · 222 reasoning | 251 of 336 | estimated |
| Write a 1,500-word blog post | 1.00¢$9.98 / 1,000 | 1,296 in · 3,117 out · 227 reasoning | 180 of 336 | estimated |
| Write 10 product descriptions | 0.43¢$4.33 / 1,000 | 1,524 in · 922 out · 48 reasoning | 133 of 336 | estimated |
| Translate 1,000 words | 1.3¢$13.12 / 1,000 | 2,542 in · 1,316 out · 2,661 reasoning | 198 of 336 | estimated |
| Proofread one page (500 words) | 0.60¢$6.03 / 1,000 | 1,947 in · 648 out · 789 reasoning | 233 of 336 | estimated |
| Summarize a 20-page PDF | 2.0¢$20.09 / 1,000 | 13,954 in · 535 out · 523 reasoning | 238 of 336 | estimated |
| Extract data from an invoice | 0.55¢$5.45 / 1,000 | 1,617 in · 464 out · 909 reasoning | 236 of 336 | estimated |
| Analyze a 200-row spreadsheet | 8.6¢$85.73 / 1,000 | 6,014 in · 1,263 out · 30,023 reasoning | 275 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 0.89¢$8.92 / 1,000 | 4,889 in · 212 out · 913 reasoning | 221 of 336 | estimated |
| Classify 100 support tickets | 1.0¢$10.34 / 1,000 | 2,512 in · 479 out · 2,400 reasoning | 212 of 336 | estimated |
| Review 500 lines of code | 9.5¢$94.65 / 1,000 | 6,185 in · 1,570 out · 33,199 reasoning | 288 of 336 | estimated |
| Write a SQL query | 0.55¢$5.52 / 1,000 | 1,372 in · 401 out · 1,121 reasoning | 236 of 336 | estimated |
| Run a 50-step coding agent | 73¢$726 / 1,000 | 2,403,075 in · 16,110 out · 45,450 reasoning | 202 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving Grok 4.3 through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
xAIunknown | $1.25 / $2.50 | $0.20 | 1M | 100% |
xAIunknown | $1.25 / $2.50 | $0.20 | 1M | 100% |
xAIunknown | $2.50 / $5.00 | $0.40 | 1M | 100% |
xAIunknown | $2.50 / $5.00 | $0.40 | 1M | 100% |
Price history
First seen in our price history on May 4, 2026 at $1.25 input / $2.50 output. The list price has not changed since.
FAQ
How much does Grok 4.3 cost?
Grok 4.3 costs $1.25 per 1 million input tokens and $2.50 per 1 million output tokens, with cached input at $0.20 (list price on Oct 18, 2026). In practice one chat answer costs about 0.45¢ and summarizing a 20-page PDF about 2.0¢.
Where is Grok 4.3 cheapest?
Among 4 providers we track, the lowest list price today is at xAI: $1.25 input and $2.50 output per 1M tokens.
Does Grok 4.3 charge for reasoning tokens?
Yes. Reasoning (thinking) tokens are billed as output tokens. That is why the cost per task can be much higher than the visible answer suggests - our task costs include them.
Is the Grok 4.3 cost per task measured or estimated?
Estimated: Grok 4.3 was not run directly. Tokens come from Grok 4.7 and are rescaled by the tokenizer of xAI. Real usage can differ.