Grok 4.3
language modelxAI
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...
Key facts
| Made by | xAI |
|---|---|
| Type | language model |
| Released | April 30, 2026 |
| Reads at once | 1,000,000 tokens |
| Price (API, per million tokens) | $1.25 in · $2.5 out |
| Input → output | text, image, file → text |
Questions about Grok 4.3
Who makes Grok 4.3?
Grok 4.3 is made by xAI.
When was Grok 4.3 released?
We first saw Grok 4.3 listed on April 30, 2026.
How much does Grok 4.3 cost?
Through OpenRouter it costs $1.25 per million input tokens and $2.5 per million output tokens. Prices change, so check the provider before you build on it.
How much text can Grok 4.3 read at once?
Up to 1,000,000 tokens, roughly 750K words.
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Modelcast collects this page automatically from public sources (OpenRouter). Facts are copied from those sources, not written by the maker. Not affiliated with xAI.