GPT-5.5 (batch)

OPENAI Developer Architecture Profile

OpenRouter ↗HuggingFace ↗

Intelligence (ELO)1501Chatbot Arena Verified

Max Context Limit1,050,000Max Out: 128,000 tokens

Prompt Caching90% OFF$0.25 / 1M cached

Standard API / 1M$17.50🧠 Deep Reasoner

Model Capabilities & Contract SLAs

Coding & Logic
Fictional
Reasoning
Agentic
📋 Strict JSON Schema
🛠️ Native Tool Calling
🧠 Extended Test-Time Reasoning

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...

Granular Pricing Matrix

Input Tokens (Standard Prompt)$2.50 / 1M

⚡ Cached Input (Prompt Cache Read)90% OFF$0.25 / 1M

Output Tokens (Completion)$15.00 / 1M

Pricing data via OpenRouter. Sync: 10/2/2026

Evaluate Competitors

VS Engine MatchupGPT-5.5 (batch) vs OpenAI: GPT-5.4 (batch)VS Engine MatchupGPT-5.5 (batch) vs Google: Gemini 3.7 Flash (batch)VS Engine MatchupGPT-5.5 (batch) vs Google: Gemini 3.5 Flash Lite VS Engine MatchupGPT-5.5 (batch) vs OpenAI: GPT-5.6 Luna Pro (batch)VS Engine MatchupGPT-5.5 (batch) vs OpenAI: GPT-5.6 Luna (batch)VS Engine MatchupGPT-5.5 (batch) vs Anthropic: Claude Fable 5