Model introduction
GPT-5.5 Pro is the high-accuracy GPT-5.5 configuration. It uses parallel test-time compute for harder questions, research, professional knowledge work, and more complete answers.
Model capabilities
Specifications come from the cited model material. Catalog tags help identify access features; use the source documentation for exact limits.
Verified specifications
- Official positioning
- Harder questions and higher-accuracy work
- Context window
- 1,000,000 tokens
- Verified input
- Text, image
- Compute profile
- Parallel test-time compute
Sources: OpenAI GPT-5.5 launch notes
Model pricing and access
Prices are read directly from the MoleAPI console catalog and shown by current billing group and context tier.
Your final charge follows the account group shown in the console.
Live pricing source
Pricing table
USD / 1M tokensStandardx1defaultInput $75 · Output $450
Input
$75 / 1M tokens
Output
$450 / 1M tokens
Access protocols
Available billing groups: Standard
- openai
- POST
- /v1/chat/completions
- openai-response
- POST
- /v1/responses
About gpt-5.5-pro
This introduction is transcreated for clarity and cross-checked against the cited model material.
GPT-5.5 Pro is the high-accuracy GPT-5.5 configuration. It uses parallel test-time compute for harder questions, research, professional knowledge work, and more complete answers.
Core strengths
- Designed for harder questions and higher-accuracy work that benefits from sustained execution.
- The underlying model covers coding, research, data analysis, documents, and tool use.
- A 1M context window fits large evidence packs and cross-file workflows.
Limitations
- The Pro configuration spends more test-time compute for quality, so cost and wait time are usually higher.
- Artificial Analysis has not published a comparable composite score for this exact Pro profile, so no inferred ranking is shown.
Selection and production evaluation
Start a gpt-5.5-pro evaluation by mapping its official positioning to real work: Difficult research, professional analysis, document and data work, and multi-pass tasks where answer quality matters more than response speed. The first pass should exercise both its main strength, "Designed for harder questions and higher-accuracy work that benefits from sustained execution.", and its known limitation, "The Pro configuration spends more test-time compute for quality, so cost and wait time are usually higher.", instead of relying on a single subjective general-chat comparison.
For access, MoleAPI currently lists openai, openai-response protocols and the Standard billing groups for this OpenAI model; the default price summary is Input $75 / 1M tokens · Output $450 / 1M tokens. Pricing, protocols, and groups come from the live catalog, so production planning should still price representative requests using real context length, output size, and cache-hit assumptions.
No independent ranking is shown unless it matches this exact model ID and reasoning profile, so nearby variants are not used as a proxy. Before launch, pin the model ID, prompt, and sample set, then compare task accuracy, structured-output validity, tool-call success, and timeout rates under the same conditions.
The model material on this page was last checked on 2026-07-23. When upstream model cards, context limits, or tool support change, update the cited bilingual facts before changing the recommendation; live MoleAPI price changes remain separate and update from the catalog automatically.
Code examples
These examples use MoleAPI's Responses API endpoint and run after you replace the API key.
curl https://api.moleapi.com/v1/responses \
-H "Authorization: Bearer $MOLEAPI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-5.5-pro",
"input": "Explain this problem step by step."
}'Frequently asked questions
How is gpt-5.5-pro priced?
This page reads prices from the MoleAPI console API and updates with model prices, context tiers, and account groups.
How can I access gpt-5.5-pro?
Protocols and endpoints come from the supported_endpoint_types field in the MoleAPI model catalog.
How do I switch an existing project to gpt-5.5-pro?
Keep the MoleAPI API address and key, replace the model parameter with the model ID on this page, then check protocol-specific parameter differences.
Where do the gpt-5.5-pro model details come from?
Capabilities and limitations are checked against OpenAI and the other cited pages. Pricing and available protocols come only from the MoleAPI console.