OpenAI: GPT-5.5
OpenAI
OpenAI: GPT-5.5 by OpenAI costs $5.00 per 1M input tokens and $30.00 per 1M output tokens, with a 1.1M-token context window.
Pricing
Input (per 1M tokens)
$5.00
Output (per 1M tokens)
$30.00
Cached input (per 1M)
$0.50
| Provider | Input / 1M | Output / 1M |
|---|---|---|
| openrouter | $5.00 | $30.00 |
| OpenAI | $5.00 | $30.00 |
Specifications
- Provider
- OpenAI
- Context window
- 1.1M tokens
- Parameters
- —
- Released
- Apr 2026
- Open weights
- No
- Frontier model
- No
Benchmarks
- GPQA Diamond
- 90.7
- LiveBench
- 79.9
- LMArena Vision Elo
- 1296.6
- LMArena WebDev Elo
- 1512.7
Speed & latency
Time to first token
4.82s
Output speed
120 tok/s
Fastest host: azure (via vercel-ai-gateway).
Compare OpenAI: GPT-5.5 with…
OpenAI: GPT-5.5 vs OpenAI: GPT-5.6 Sol Pro$10.00/1MOpenAI: GPT-5.5 vs OpenAI: GPT-6.1 Sol Pro$10.00/1MOpenAI: GPT-5.5 vs OpenAI: GPT-6.1 Sol Pro (batch)$5.00/1MOpenAI: GPT-5.5 vs OpenAI: GPT-6.1 Sol$10.00/1MOpenAI: GPT-5.5 vs OpenAI: GPT-6.1 Sol (batch)$5.00/1MOpenAI: GPT-5.5 vs OpenAI: GPT-6 Luna Pro$0.50/1M
FAQ
How much does OpenAI: GPT-5.5 cost?
OpenAI: GPT-5.5 is priced at $5.00 per 1M input tokens and $30.00 per 1M output tokens. Output tokens cost more than input.
What is OpenAI: GPT-5.5's context window?
OpenAI: GPT-5.5 supports a context window of 1.1M tokens — the maximum prompt plus response length it can handle in a single request.
Is OpenAI: GPT-5.5 open weight?
No — OpenAI: GPT-5.5 is a closed/proprietary model accessed via API.
Data as of 2026-10-14. Source: Pricing via OpenRouter API, openrouter.ai. Pricing is per 1M tokens (USD); confirm with the provider before production use.