LLMS • CURATED • UPDATED APR 1, 2026

Grok 4.3

xAI's long-context flagship with a 1M-token window
Price
Paid
API
Yes
Weights
No

Grok 4.3 is xAI's general-purpose frontier model released in April 2026. It pairs strong reasoning and coding with a 1-million-token context window, making it practical for analyzing long documents and large codebases in a single pass.

Grok 4.3 is the sweet spot in xAI's lineup for anyone who needs a frontier model with a very large context window at a lower price than Grok 4.5.

Pricing Paid
Platforms web, api
API Yes
Open Source No
Modalities LLMs, Multimodal Reasoning
Best For Best for Long-Context Work
Date Added 2026-04-01
Paid

Requires a paid subscription.

View Grok 4.3 Alternatives (2026) →

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Q

Is Grok 4.3 free?

A

No, Grok 4.3 requires a paid subscription.

Q

Does Grok 4.3 have an API?

A

Yes, Grok 4.3 offers an API for programmatic integration.

Q

What is Grok 4.3 best for?

A

Grok 4.3 is best for Long-Context Work. Grok 4. Grok 4.3 is the sweet spot in xAI's lineup for anyone who needs a frontier model with a very large context window at a lower price than Grok 4.5.

Q

What platforms does Grok 4.3 support?

A

Grok 4.3 supports web, api.

Q

Is Grok 4.3 open source?

A

No, Grok 4.3 is not open source.

Q

How do I use Grok 4.3?

A

Grok 4.3 is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses.

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