GPT-5.5 Pro

Name: GPT-5.5 Pro
Price: 30 USD
Author: OpenAI

GPTv5.5 ProCurrent

OpenAI(ai lab)

Released April 23, 2026

API Docs Playground

OpenTools Scorenormalized /100

0.9

Valuescore / $M

OpenTools Score

Context1.1M tokens

Price (In / Out)$30.00/M / $180.00/M

Training CutoffDec 01, 2025

CategoryMultimodal LLM

Max Output128K tokens

About GPT-5.5 Pro

GPT-5.5 Pro uses more compute to think harder and provide consistently better answers than GPT-5.5. Designed for the toughest problems, some requests may take several minutes. It excels at FrontierMath Tier 4 (39.6%) and BrowseComp (90.1%), offering the highest intelligence available from OpenAI at a premium price point.

Capabilities

textvisioncodetool useextended thinkingweb search

Input Modalities

textimage

Output Modalities

text

Technical Details

API Identifier: openai/gpt-5.5-pro
Category: Multimodal LLM
Context Window: 1,050,000 tokens
Max Output Tokens: 128,000 tokens

Benchmarks

Performance scores for GPT-5.5 Pro across standard benchmarks.

FrontierMath Tier 4OpenAI · Apr 2026

39.6%

FrontierMath Tier 1-3OpenAI · Apr 2026

52.4%

HLE (with tools)OpenAI · Apr 2026

57.2%

HLE (no tools)OpenAI · Apr 2026

43.1%

BrowseCompOpenAI · Apr 2026

90.1%

GeneBenchOpenAI · Apr 2026

33.2%

GDPvalOpenAI · Apr 2026

82.3%

Investment Banking ModelingOpenAI · Apr 2026

88.6%

Pricing

Token pricing for GPT-5.5 Pro API usage.

Input Tokens

$30.00/M

per million tokens

Output Tokens

$180.00/M

per million tokens

Pricing Calculator

Input tokens/month

Output tokens/month

Input cost$30.00

Output cost$90.00

Estimated monthly cost$120.00

No cached input discount. Long context (>272K tokens): 2x input, 1.5x output. Batch API: 50% discount. Regional processing: 10% uplift.

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Creating safe AGI that benefits all of humanity

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Model	Context Window	Price (In / Out per M)	Capabilities
GPT-5.6 LunaCurrent	1.1M	$0.20 / $1.20	textvisionreasoningcoding+5
GPT-5.6 SolCurrent	1.1M	$4.00 / $20.00	textvisionreasoningcoding+5
GPT-5.6 TerraCurrent	1.1M	$2.00 / $12.00	textvisionreasoningcoding+5
GPT-5.5Current	1.1M	$5.00 / $30.00	textvisioncodetool use+3
GPT-5.4 MiniCurrent	400K	$0.75 / $4.50	textvisioncode
GPT-5.4 NanoCurrent	400K	$0.20 / $1.25	textvisioncode