Grok 4.3
Provider：xAI
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 specs
- Context：1M
- Max output：900K
- Tokenizer：Grok
- Released：2026-04-30
Token pricing
- Input price：$1.25 / 1M tokens
- Output price：$2.50 / 1M tokens
- Cache read：$0.200 / 1M tokens
- Blended price：$1.56 / 1M tokens
Modalities
Text, Image, File
Use Cases
- Deep Reasoning & Analysis：Process long legal docs, academic papers, financial reports; multi-hop reasoning and evidence-chain tracing across huge contexts.（≈ $0.020/call）
- Vision Understanding & Generation：Recognize data trends in charts, OCR scanned docs, analyze photos and produce structured reports.（≈ $0.015/call）
- Chat & Support：FAQ auto-response, multi-turn dialogue, emotion detection — e-commerce, finance, gov.（≈ $0.0050/call）
When to pick this model
Signals derived from public pricing and spec fields — not a benchmark. Validate with official docs and your own eval.
- Long context (>=1M tokens): well-suited for long-doc QA, code-base analysis, multi-turn agents.
- Long max output (>=30K tokens): strong fit for deep report / essay / document-drafting workflows.
- Multimodal (text+image): fit for image captioning, OCR, chart QA, vision-grounded reasoning.
- File / PDF input support: fit for document parsing, contract review, RAG over private data.
FAQ
- What is the token pricing of Grok 4.3? Input price $1.25 / 1M tokens, output price $2.50 / 1M tokens, blended about $1.56 / 1M tokens. Refer to xAI’s official page for the exact rate.
- What context window does Grok 4.3 support? Context window is 1M, max output about 900K, suitable for long documents, multi-turn chat and complex reasoning.
- What scenarios is Grok 4.3 best for? Based on its capability and pricing, Grok 4.3 fits best: Deep Reasoning & Analysis, Vision Understanding & Generation, Chat & Support. See the Use Cases section for details and cost estimates.
- What input/output modalities does Grok 4.3 support? Supports Text, Image, File modality.
- Is Grok 4.3 a free model? Grok 4.3 is billed per token, not a free model.
- Which provider offers Grok 4.3? Grok 4.3 is offered by xAI.
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Full info：Grok 4.3