GPT-5.5 Pro
Provider：OpenAI
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
Key specs
- Context：1.1M
- Max output：128K
- Tokenizer：GPT
- Released：2026-04-24
Token pricing
- Input price：$30.00 / 1M tokens
- Output price：$180.00 / 1M tokens
- Blended price：$67.50 / 1M tokens
Modalities
File, Image, Text
Use Cases
- Deep Reasoning & Analysis：Process long legal docs, academic papers, financial reports; multi-hop reasoning and evidence-chain tracing across huge contexts.（≈ $1.44/call）
- Vision Understanding & Generation：Recognize data trends in charts, OCR scanned docs, analyze photos and produce structured reports.（≈ $1.08/call）
- Content Moderation：Auto-detect violations, hate speech, NSFW content; custom rule sets and score thresholds.
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 GPT-5.5 Pro? Input price $30.00 / 1M tokens, output price $180.00 / 1M tokens, blended about $67.50 / 1M tokens. Refer to OpenAI’s official page for the exact rate.
- What context window does GPT-5.5 Pro support? Context window is 1.1M, max output about 128K, suitable for long documents, multi-turn chat and complex reasoning.
- What scenarios is GPT-5.5 Pro best for? Based on its capability and pricing, GPT-5.5 Pro fits best: Deep Reasoning & Analysis, Vision Understanding & Generation, Content Moderation. See the Use Cases section for details and cost estimates.
- What input/output modalities does GPT-5.5 Pro support? Supports File, Image, Text modality.
- Is GPT-5.5 Pro a free model? GPT-5.5 Pro is billed per token, not a free model.
- Which provider offers GPT-5.5 Pro? GPT-5.5 Pro is offered by OpenAI.
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Full info：GPT-5.5 Pro