Grok 4.3
xAIProprietary1M context
Grok 4.3 is a proprietary model from xAI with a 1M-token context window. 4 providers list it, all at $1.25 per million input tokens and $2.50 per million output tokens.
- Maker
- xAI
- Licence
- Proprietary
- Context window
- 1M
- Providers listed
- 4
- Lowest input, per 1M
- $1.25
- Lowest output, per 1M
- $2.50
- xAI's own API, per 1M
- $1.25 in · $2.50 out
- Effort settings
- Non-reasoning, Low, Medium, High
Providers serving Grok 4.3
Cheapest first, by the blended rate of three input tokens to one output token. Prices in US dollars per million tokens, as of 26 Oct 2026.
| Provider | Input | Output | Context | Tools | JSON mode | OpenAI-compatible | Model ID |
|---|---|---|---|---|---|---|---|
Amazon Bedrock | $1.25 | $2.50 | 1M | Yes | Yes | No | xai.grok-4.3 |
Google Vertex | $1.25 | $2.50 | 200k | Yes | Yes | No | xai/grok-4.3 |
Microsoft Azure | $1.25 | $2.50 | 200k | Yes | Yes | — | grok-4.3 |
xAI | $1.25 | $2.50 | 1M | Yes | Yes | No | grok-4.3 |
Benchmark scores
Published scores only, each linked to its source. Compare every model in Bench rankings
| Benchmark | High |
|---|---|
GPQA Diamond PhD-level scientific reasoning | 88.8% |