grok-4.3 · xAI
The value Grok: $1.25/$2.50 with a 1M-token window — one of the cheapest million-context offerings anywhere.
Last checked Aug 16, 2026. Calculations use the listed base rates; provider-specific tiers, cache writes, batch pricing, and long-context rules may differ. Note: Prompts ≥200K bill $2.50/$5 for all tokens. Confirm the current rate at the official provider source.
Input
$1.25
per 1M tokens
Output
$2.50
per 1M tokens
Cached input
$0.20
per 1M tokens
Context window
1M
max output 32.8K
Grok 4.3 cost calculator
What Grok 4.3 costs per task
| Use case | Input tokens | Output tokens | Cost / request | Monthly @ 1K req/day |
|---|---|---|---|---|
| Customer support chatbot | 3,500 | 350 | $0.002677 | $80.325 |
| RAG / search-augmented answers | 8,000 | 500 | $0.00705 | $211.50 |
| AI coding assistant | 12,000 | 2,000 | $0.0124 | $373.20 |
| Document summarization | 25,000 | 600 | $0.0301 | $903.75 |
| Agentic workflow | 40,000 | 1,500 | $0.0265 | $793.50 |
| Content generation | 800 | 1,200 | $0.003748 | $112.44 |
| Data extraction & tagging | 2,000 | 250 | $0.002705 | $81.15 |
| Translation | 5,000 | 5,500 | $0.0192 | $576.375 |
Assumes each use case's typical cacheable share of input. See full cost scenarios.
Compare with alternatives
| Model | Input /M | Output /M | Context | Chat request* |
|---|---|---|---|---|
| Grok 4.3 | $1.25 | $2.50 | 1M | $0.0049 |
| Gemini 3.5 Flash-Litecompare | $0.30 | $2.50 | 1M | $0.00266 |
| GPT-5.6 Luna | $0.20 | $1.20 | 1.1M | $0.0014 |
| Mistral Large 3 | $0.50 | $1.50 | 131.1K | $0.0023 |
*4,000 in + 800 out tokens, 50% cached input where available.
Related calculations
FAQ
Grok 4.3 costs $1.25 per 1M input tokens and $2.50 per 1M output tokens, with cached input at $0.20 per 1M tokens. Verified Aug 16, 2026 against https://docs.x.ai/docs/models.
Grok 4.3 supports a 1,000,000-token context window with up to 32,768 output tokens per request, tokenized with Grok tokenizer.
At $1.25/M input and $2.50/M output, Grok 4.3 sits above Gemini 3.5 Flash-Lite ($0.30/M in, $2.50/M out) — see the comparison table for full-workload differences.