Last refreshed 2026-07-09. Next refresh: weekly.
Why use Grok 4.3 on OpenRouter?
OpenRouter offers Grok 4.3 with pay-as-you-go pricing at $1.25/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Grok 4.3 across 5 providers to find the best fit for your use caseInput / 1M
$1.25
Output / 1M
$2.50
Cache
read $0.20
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: x-ai/grok-4.3Model ID
x-ai/grok-4.3Request example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
x-ai/grok-4.3.Gotchas
- Use provider model ID "x-ai/grok-4.3", not the LLMReference slug "grok-4.3".
Compare Grok 4.3 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| xAI Console | $1.25 | $2.50 |
| OpenRouter | $1.25 | $2.50 |
| Microsoft Foundry | — | — |
| Vercel AI Gateway | $1.25 | $2.50 |
| AWS Bedrock | $1.25 | $2.50 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.25 |
| Output tokens | $2.50 |
Capabilities
VisionMultimodalReasoningJSON / Tool useStructured OutputsPrompt Caching
About Grok 4.3
xAI's Grok 4.3 is the current flagship API chat model for agentic tool calling and instruction following. xAI lists text and image input, text output, configurable reasoning, a 1,000,000 token context window, cached-input pricing, function calling, and structured outputs.
Get Started
Model Specs
Released2026-05-06
Parameters~0.5T
Context1m
Knowledge cutoff2024-11