Model tracker / xAI
Grok 4.3
Grok 4.3 is a fast model from xAI. At xAI it costs $1.25 per million input tokens and $2.50 per million output tokens, with a 1M-token context window.
- Made by
- SpaceXAI (formerly xAI)
- Status
- Generally available
- Tier
- Fast
- Weights
- Closed
- Context window
- 1,000,000 tokens
- Input
- text, image
- API id
grok-4.3
Grok 4.3 price at xAI
US dollars per million tokens. Blended is 3 input tokens for every output token, one number to compare on.
| Provider | Input | Output | Cached input | Blended | Batch | Checked |
|---|---|---|---|---|---|---|
| xAI · maker | $1.25 | $2.50 | $0.20 | $1.56 | 20% off | 2026-10-14 |
- xAI: Up to 200K input tokens. Requests of 200K tokens or more cost $2.50 in / $0.40 cached / $5.00 out.
Models like Grok 4.3
Other fast models closest in price, at each maker's own price or the cheapest provider.
| Model | Input | Output | Context | Weights |
|---|---|---|---|---|
| Grok 4.3 | $1.25 | $2.50 | 1M | Closed |
| Gemini 3.6 Flash Google | $0.75 | $3.75 | 1M | Closed |
| Gemini 3.8 Flash Google | $0.75 | $3.75 | 1M | Closed |
| Claude Haiku 4.5 Anthropic | $1.00 | $5.00 | 200K | Closed |
| Qwen3.8 27B Alibaba | $0.50 | $3.00 | 1M | Open |
| Amazon Nova 2 Lite AWS | $0.30 | $2.50 | 1M | Closed |
Compare them all in the model tracker →
Grok 4.3 FAQ
How much does Grok 4.3 cost?
Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens at xAI, and $0.20 per million cached input tokens, with 20% off for batch requests. Prices are list prices in US dollars, last checked 14 October 2026.
What is Grok 4.3's context window?
Grok 4.3 takes up to 1,000,000 tokens in one request.
Is Grok 4.3 open weight?
No. Grok 4.3 is only available through xAI's API; xAI doesn't publish the weights.
Where can I use Grok 4.3?
Grok 4.3 is available from xAI. At xAI, call it as grok-4.3.