How much does GPT-5.5 Pro cost?

GPT-5.5 Pro costs $30 per million input tokens and $180 per million output tokens. The blended average is $105.00 per million tokens.

What is the context window of GPT-5.5 Pro?

GPT-5.5 Pro supports a context window of 1000K tokens (1,000,000 tokens) and can generate up to 33K output tokens per request.

What is GPT-5.5 Pro best for?

GPT-5.5 Pro is best for: Reasoning at any cost. It supports chat, vision, function_calling, code, reasoning capabilities.

GPT-5.5 Pro — Pricing, Benchmarks & Specs

GPT-5.5 Pro

OpenAIreasoning New

High-compute variant of GPT-5.5 with extended thinking. 6x the price for mid-teens AAII uplift on hard reasoning workloads.

Context Window

tokens

Max Output

33K

tokens

Input Price

$30

per 1M tokens

Output Price

$180

per 1M tokens

Speed

tokens/sec

Released

Apr 2026

2026-04-23

Blended Cost

$105.00

per 1M tokens

Value Score

0.9

quality per $

Capabilities

ChatVisionFunction CallingCode GenerationReasoning

Benchmarks

Quality Index

MMLU Pro

92.1

HumanEval (Coding)

96.8

MATH

95.4

Arena ELO

1502

Try in Playground Use via Swfte Connect OpenAI Docs

Compare With

Quality: 96·$25.00/1M

About GPT-5.5 Pro

GPT-5.5 Pro is a reasoning AI model by OpenAI, released on April 23, 2026. It supports a context window of 1000K tokens and can generate up to 33K output tokens.

At $30 per million input tokens and $180 per million output tokens, its blended cost of $105.00/1M tokens places it in the premium pricing tier. Its value score of 0.9 reflects the balance of quality and cost.

Using GPT-5.5 Pro with Swfte

Access GPT-5.5 Pro through Swfte Connect, our unified LLM gateway. Connect gives you a single API for 50+ models, with automatic routing, cost optimization, and fallback handling. You can also try GPT-5.5 Pro in our AI Playground before integrating.