OpenAI model product
GPT-5.5-Pro
5, designed for the hardest questions and highest-accuracy work.
Updated Aug 17, 2026. Default version: GPT-5.5 Pro
LLMBoard Score75.9GPT-5.5 Pro
Coverage40%4 benchmark families
Context window1.1MTokens
Official input price$30OpenAI API
GPT-5.5-Pro Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
GPT-5.5-Pro Benchmark Results
Benchmark scores for GPT-5.5 Pro.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkGeneBench | Score33.2% | Rank01 | Participants2 | Percentile100.0% | EvidenceC | Evaluated |
| BenchmarkGDPval-MM | Score82.3% | Rank02 | Participants3 | Percentile50.0% | EvidenceC | Evaluated |
| BenchmarkBrowseComp | Score90.1% | Rank04 | Participants62 | Percentile95.1% | EvidenceC | Evaluated |
| BenchmarkFrontierMath | Score39.6% | Rank06 | Participants17 | Percentile68.8% | EvidenceC | Evaluated |
| BenchmarkHumanity's Last Exam | Score57.2% | Rank10 | Participants99 | Percentile90.8% | EvidenceC | Evaluated |
GPT-5.5-Pro Arena Results
Preference and agent-evaluation results for the default version.
No Arena results
The default version does not have a matching Arena result yet.
GPT-5.5-Pro Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $30 input, $180 output per 1M
- Official provider
- OpenAI
- Lowest third-party
- From $27.27 input, $163.64 output per 1M via Poe
- Tracked offerings
- 17
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderPoe | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$27.27 | Output / 1M$163.64 | Context400K | Updated |
| ProviderOrcaRouter | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderImpossibl | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderOpenRouter | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderCrossModel | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderOpenAI | Provider model IDgpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderCloudflare AI Gateway | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderFastRouter | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderZenMux | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderNeon | Provider model IDgpt-5-5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderOpenCode Zen | Provider model IDgpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderVercel AI Gateway | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1M | Updated |
| ProviderEden AI | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderEden AI | Provider model IDopenai/gpt-pro-latest | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderLLM Gateway | Provider model IDgpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderKilo Gateway | Provider model IDopenai/gpt-5.5-pro | Regionglobal | Input / 1M$30 | Output / 1M$180 | Context1.1M | Updated |
| ProviderVenice AI | Provider model IDopenai-gpt-55-pro | Regionglobal | Input / 1M$37.5 | Output / 1M$225 | Context1M | Updated |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
GPT-5.5-Pro Runtime Performance
Provider-specific output speed and catalog latency for GPT-5.5 Pro. Runtime does not affect the capability score.
No runtime data
Browse runtime rankingsNo provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
GPT-5.5-Pro Specifications
Technical details for the model's default version.
- Version
- GPT-5.5 Pro
- Released
- Apr 23, 2026
- Knowledge cutoff
- Dec 1, 2025
- Parameters
- N/A
- Context window
- 1.1M
- Max output
- 128K
- Inputs
- image, pdf, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
GPT-5.5-Pro Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionGPT-5.5 Pro | Released | LLMBoard75.9 | ParametersN/A | Context1.1M | Max output128K | Open weightsNo | LicenseProprietary |
GPT-5.5-Pro vs nearby models
Open a comparison with the three ranked models immediately above and below this model.
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What is GPT-5.5-Pro?
Key information about GPT-5.5-Pro and its available data.
5, designed for the hardest questions and highest-accuracy work. 5 with significantly more comprehensive, well-structured, and accurate responses, with especially strong performance in business, legal, education, science, and data analysis. Priced at $30/1M input and $180/1M output tokens with a 1M context window.
Data as of 2026-08-17.
FAQ
Common questions about GPT-5.5-Pro.
When was GPT-5.5-Pro released?
GPT-5.5-Pro's default version was released on Apr 23, 2026.
How much does GPT-5.5-Pro cost?
GPT-5.5-Pro's official API price is $30 per million input tokens and $180 per million output tokens via OpenAI. The lowest tracked third-party offer starts at $27.27 input and $163.64 output via Poe.
Who created GPT-5.5-Pro?
GPT-5.5-Pro was created by OpenAI.
What is the context window for GPT-5.5-Pro?
The default version has a 1.1M token context window.
Is GPT-5.5-Pro open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer GPT-5.5-Pro?
17 provider offerings are linked to the default version.
What models should I compare GPT-5.5-Pro with?
Nearby ranked alternatives include DeepSeek-V4-Flash, GPT-5.6-Luna, GPT-5.4.