Grok 4.3
Last verified September 7, 2026 · xAI pricing ↗$1.25/1M input · $2.50/1M output · 1.0M context · xAI
Grok 4.3 costs $1.25 per 1M input tokens and $2.50 per 1M output tokens from xAI, with a 1.0M-token context window. A typical chat reply (1,500 tokens in, 400 out) costs $0.0029, or $28.75 per 10,000 requests. On that workload it is cheaper than 84 of the 167 other buyable models tracked here.
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What Grok 4.3 Costs Per Request
At $1.25 per 1M input and $2.50 per 1M output tokens, before caching or batch discounts.
| Workload | Input / output tokens | Per request | Per 10,000 requests |
|---|---|---|---|
| Chat reply | 1,500 / 400 | $0.0029 | $28.75 |
| RAG answer over retrieved docs | 8,000 / 600 | $0.011 | $115.00 |
| Coding-agent step | 30,000 / 2,000 | $0.043 | $425.00 |
Grok 4.3 vs Similarly Priced Models
Nearest buyable models by price, with the RAG answer above (8,000 in / 600 out) priced on each.
| Model | Input /1M | Output /1M | Context | RAG answer |
|---|---|---|---|---|
| Grok 4.3 xAI | $1.25 | $2.50 | 1.0M | $0.011 |
| Grok 4.20 xAI | $1.25 | $2.50 | 1.0M | $0.011 |
| LongCat-2.0 Meituan | $0.750 | $2.95 | 1.0M | $0.0078 |
| KAT-Coder-Pro v2.5 Kwaipilot | $0.740 | $2.96 | 262K | $0.0077 |
Alternatives to Grok 4.3
Pricing Details
xAIColossus 2 weights refresh + Agent Mode unlock May 18. Cached input: $0.20/1M. Above 200K prompt tokens the rate doubles to $2.50/$5.00 (cached $0.40). Batch: 50-80% of standard. Always-on reasoning. Now also the redirect target for the eight slugs xAI retired on May 15, 2026. Estimated tokens (different tokenizer).
Input / 1M tokens
$1.25
Output / 1M tokens
$2.5
Context Window
1.0M
Max Output
16K
Price History
No price change recorded since 2026-07-27, when this site started tracking this model; it launched on 2026-04-30.
Frequently Asked Questions
Common questions about Grok 4.3 pricing and usage
How much does Grok 4.3 cost?
Grok 4.3 costs $1.25 per 1 million input tokens and $2.5 per 1 million output tokens. This pricing is set by xAI.
What tokenizer does Grok 4.3 use?
Grok 4.3 uses the cl100k_base tokenizer. This tokenizer has a vocabulary of ~100,000 tokens and is widely used across many models.
What is Grok 4.3's context window?
Grok 4.3 supports a context window of 1.0M tokens (1,000,000 tokens). The maximum output length is 16K tokens.
How does Grok 4.3 compare to other models?
On an 8,000-token-in, 600-token-out RAG answer, Grok 4.3 costs $0.011 per request. The nearest-priced alternatives cost: Grok 4.20 (xAI) $0.011, LongCat-2.0 (Meituan) $0.0078, KAT-Coder-Pro v2.5 (Kwaipilot) $0.0077. The table above lists their full rates and context windows.
How do I count tokens for Grok 4.3?
Use the token counter at the top of this page or visit the homepage calculator. Paste your text and it will show the exact token count and cost for Grok 4.3 using the cl100k_base tokenizer.