GPT-5.5

OPENAI Developer Architecture Profile

Intelligence (ELO)1482Chatbot Arena Verified

Max Context1,050,000Tokens

API Cost / 1M$35.00Blended Prompt + Completion

Model Capabilities

Coding & Logic
Fictional

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 (Prompt)$5.00 / 1M

Output Tokens (Completion)$30.00 / 1M

Pricing data via OpenRouter. Sync: 4/24/2026

Evaluate Competitors

VS Engine MatchupGPT-5.5 vs Google: Nano Banana (Gemini 2.5 Flash Image)VS Engine MatchupGPT-5.5 vs OpenAI: GPT-4o (2024-11-20)VS Engine MatchupGPT-5.5 vs OpenAI: GPT-5.1-Codex VS Engine MatchupGPT-5.5 vs OpenAI: GPT-5 Nano VS Engine MatchupGPT-5.5 vs Sao10K: Llama 3.3 Euryale 70B VS Engine MatchupGPT-5.5 vs OpenAI: o1