GPT-5.5 Pro vs GPT-5.5

GPT-5.5 Pro from OpenAI and GPT-5.5 from OpenAI are shown side by side so you can compare pricing, model IDs, context and output limits, modalities, tool use, release details, and benchmark results where data is available.

Overall Recommendation

GPT-5.5 is the practical default: it keeps the same 1.05M context, 128K output, and input modalities at one-sixth of the Pro price. Choose GPT-5.5 Pro only when TokenHub’s high-compute tier and maximum answer quality justify the premium.

Comparison Highlights

GPT-5.5 ProOpenAI
GPT-5.5OpenAI
Best For
Highest-difficulty professional reasoningdeliverables
Professional codingresearchdocument-heavy work
How To Read ItUse-case synthesis from model capabilities and positioning.
Workload Fit
Pro reasoningCodingResearch
CodingAnalysisKnowledge work
How To Read ItThe workloads each model is most directly shaped for.
Input
$30/M
$5/MEdge
How To Read ItLower is better when prompts or retrieval payloads are large.
Output
$180/M
$30/MEdge
How To Read ItLower is better for reasoning-heavy or long-generation traffic.
Context length
1.1M
1.1M
How To Read ItHigher is better for repositories, retrieval packs, and transcripts.
Input modalities
Image, PDF, Text
Image, PDF, Text
How To Read ItBroader input support reduces the need for separate vision or video models.

Model Selection Guide

GPT-5.5 ProOpenAI

Choose GPT-5.5 Pro When

  • TokenHub positions it as the high-compute GPT-5.5 tier for the hardest professional tasks
  • $30 input and $180 output per million tokens, prioritizing answer quality over cost
  • A 1.05M context window, 128K maximum output, and text, image, and PDF input
GPT-5.5OpenAI

Choose GPT-5.5 When

  • A 54.8 Intelligence Index and 59.1 Coding Index in TokenHub’s xhigh profile
  • $5 input and $30 output per million tokens, with $0.50 cached input
  • A 1.05M context window, 128K maximum output, and text, image, and PDF input

Basic Information

GPT-5.5 ProOpenAI
GPT-5.5OpenAI

Name

GPT-5.5 ProGPT-5.5 Pro

Model id

GPT-5.5 Progpt-5.5-pro

Intro

GPT-5.5 ProGPT-5.5 Pro is the higher-compute variant of OpenAI’s GPT-5.5 generation, intended for the hardest professional tasks where answer quality matters more than speed. OpenAI materials describe the Pro tier as thinking harder for greater precision across coding, research, data analysis, and document-heavy work. It should be positioned for difficult reasoning and professional-grade deliverables rather than routine chat.

Author

GPT-5.5 ProOpenAI

Released date

GPT-5.5 Pro2026-04-23

Context length

GPT-5.5 Pro1.1M

Max output tokens

GPT-5.5 Pro128K

Name

GPT-5.5GPT-5.5

Model id

GPT-5.5gpt-5.5

Intro

GPT-5.5GPT-5.5 is described by OpenAI as a smarter frontier model for coding, research, data analysis, and professional knowledge work. The official launch messaging emphasizes higher capability, better speed than previous difficult-work models, and strong performance on tasks involving documents and structured analysis. Its description should focus on broad professional intelligence rather than a single niche.

Author

GPT-5.5OpenAI

Released date

GPT-5.52026-04-23

Context length

GPT-5.51.1M

Max output tokens

GPT-5.5128K

Pricing

GPT-5.5 ProOpenAI
GPT-5.5OpenAI

Input

GPT-5.5 Pro$30/M

Output

GPT-5.5 Pro$180/M

Cached input

GPT-5.5 Pron/a

Input

GPT-5.5$5/M

Output

GPT-5.5$30/M

Cached input

GPT-5.5$0.5/M

Capabilities

GPT-5.5 ProOpenAI
GPT-5.5OpenAI

Reasoning

GPT-5.5 Pro

Knowledge

GPT-5.5 Pro2025-12-01

Attachment

GPT-5.5 Pro

Input modalities

GPT-5.5 ProImage, PDF, Text

Output modalities

GPT-5.5 ProText

Temperature

GPT-5.5 Pro

Tool use

GPT-5.5 Pro

Reasoning

GPT-5.5

Knowledge

GPT-5.52025-12-01

Attachment

GPT-5.5

Input modalities

GPT-5.5Image, PDF, Text

Output modalities

GPT-5.5Text

Temperature

GPT-5.5

Tool use

GPT-5.5

Benchmark

GPT-5.5 ProOpenAINo benchmark data
GPT-5.5OpenAI

Intelligence

n/a

Coding

n/a

Intelligence

wins54.8

Coding

wins59.1

Knowledge & Reasoning

GPQA

n/a

HLE

n/a

GPQA

wins93.5%

HLE

wins44.3%

Coding

SciCode

n/a

Terminal-Bench Hard

n/a

SciCode

wins56.1%

Terminal-Bench Hard

wins60.6%

Instruction Following & Agent Tasks

IFBench

n/a

AA-LCR

n/a

Tau2

n/a

IFBench

wins75.9%

AA-LCR

wins74.3%

Tau2

wins93.9%

FAQ

Which model is better, GPT-5.5 Pro or GPT-5.5?

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GPT-5.5 Pro and GPT-5.5 should be compared by workload. This page places price, context, output limits, capabilities, and benchmark data side by side.

Is GPT-5.5 cheaper than GPT-5.5 Pro?

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Use the pricing rows above to compare input, output, and cached input prices for GPT-5.5 Pro and GPT-5.5.

Which model supports a longer context length?

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GPT-5.5 Pro lists 1.1M context length, while GPT-5.5 lists 1.1M.

Can I access both models through TokenHub?

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If both models are available in the TokenHub catalog, you can route requests to GPT-5.5 Pro and GPT-5.5 through the TokenHub API.