GPT-5.5 Pro

OpenAI model details for pricing, context, and release tracking.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output
Model Specs
ProviderOpenAI
Model IDopenai/gpt-5.5-pro
Prompt Price
per 1M tokens		$30
Completion Price
per 1M tokens		$180
Sample Workload Cost
1M input + 500K output		$120
Context Window1.05M
Release Date2026-04-24
Popularity RankUnranked
Daily DemandN/A

Estimate your workload cost

Estimate this model for your workload

Prices are normalized to USD per 1M tokens.
GPT-5.5 Pro Calculating… Estimated monthly API cost
Unit prices $30 input / $180 output Per 1M tokens

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Model Introduction

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...

Best Fit

GPT-5.5 Pro is best suited for long-context workloads.

Cost Example

A 1M input token plus 500K output token workload is estimated at $120.

Decision Shortcuts

Compare this model

Search head-to-head pages that include GPT-5.5 Pro and review input price, output price, context, and sample workload cost.

Find comparisons

OpenAI catalog

See other OpenAI models before narrowing your shortlist.

Open provider hub

Cheaper alternatives

Start from models ranked by a standard cost estimate when budget is the first constraint.

Browse low-cost models

Popular Comparisons

Search all comparisons
ComparisonNewest Release
Anthropic Claude Haiku Latest vs GPT-5.5 Pro2026-04-27
Anthropic Claude Sonnet Latest vs GPT-5.5 Pro2026-04-27
🔥Claude 4.6 Opus vs GPT-5.5 Pro2026-04-24
NewClaude Opus 4.7 (Fast) vs GPT-5.5 Pro2026-05-12
🔥Claude Opus 4.7 vs GPT-5.5 Pro2026-04-24
🔥Claude Sonnet 4.6 vs GPT-5.5 Pro2026-04-24
CoBuddy (free) vs GPT-5.5 Pro2026-05-06
🔥DeepSeek V3.2 vs GPT-5.5 Pro2026-04-24
🔥DeepSeek V4 Flash vs GPT-5.5 Pro2026-04-24
🔥DeepSeek V4 Pro vs GPT-5.5 Pro2026-04-24