xAI
Grok 3 Fast Pricing
API pricing for Grok 3 Fast by xAI. Input tokens cost $5/1M, output tokens cost $25/1M with 131K context window.
Last updated:
Tools
Input Cost
$5
per 1M tokens
Output Cost
$25
per 1M tokens
Context Window
131K
tokens
Cost Calculator
Estimated Cost:
$0.00
Model Details
Provider
xAI
Model ID
grok-3-fast
Context Window
131K tokens
Max Output
8192 tokens
Cache Read Cost
$1.25/1M
Release Date
2025-02-17
Compare Alternatives
| Model | Input | Output | Context |
|---|---|---|---|
| Grok 3 Fast (this model) | $5 | $25 | 131K |
| Claude Opus 4.5 Anthropic | $5 | $25 | 200K |
| Claude Opus 4.5 (latest) Anthropic | $5 | $25 | 200K |
| Grok 3 Fast Latest xAI | $5 | $25 | 131K |
| Gemini 2.5 Flash Image Google | $0.3 | $30 | 33K |
| Gemini 2.5 Flash Image (Preview) Google | $0.3 | $30 | 33K |
Available from Resellers
Grok 3 Fast is also available through these resellers and gateways:
| Reseller | Model | Input | Output |
|---|---|---|---|
| Abacus | Grok 4 Fast (Non-Reasoning) | $0.2 | $0.5 |
| Abacus | Grok 4.1 Fast (Non-Reasoning) | $0.2 | $0.5 |
| Abacus | Grok Code Fast 1 | $0.2 | $1.5 |
| Azure | Grok 4 Fast (Non-Reasoning) | $0.2 | $0.5 |
| Azure | Grok 4 Fast (Reasoning) | $0.2 | $0.5 |
| Azure | Grok Code Fast 1 | $0.2 | $1.5 |
| Azure Cognitive Services | Grok 4 Fast (Non-Reasoning) | $0.2 | $0.5 |
| Azure Cognitive Services | Grok 4 Fast (Reasoning) | $0.2 | $0.5 |
| Azure Cognitive Services | Grok Code Fast 1 | $0.2 | $1.5 |
| GitHub Copilot | Grok Code Fast 1 | $0 | $0 |