GPT-5.5 (batch)
openai/gpt-5.5:batch
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.
Key facts
- Input price
- $2.50 / 1M tokens
- Output price
- $15.00 / 1M tokens
- Context window
- 1.1M tokens
- Max output
- 128K tokens
- Accepts
- Text, Images, Files
- Returns
- Text
Example: 1,000 requests with 1,000 input and 500 output tokens each would cost about $10.00 (1M input tokens × $2.50 + 0.5M output tokens × $15.00). Estimate your own usage.
Prices are the provider’s own per-token rates with zero markup, from our price list as of Oct 18, 2026. If a call has extra provider charges (images, audio, web search, cached prompts), you pay the reported cost.
Call it from your code
curl https://api.tokenctr.com/v1/chat/completions \
-H "Authorization: Bearer $TOKENCENTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "openai/gpt-5.5:batch", "messages": [{"role": "user", "content": "Hello!"}]}'Works with any OpenAI-compatible SDK: set the base URL to https://api.tokenctr.com/v1. Quickstart
Benchmarks
Artificial Analysis
- Intelligence index
- 38.4
- Coding index
- 74.9
- Agentic index
- 36.4
Design Arena
| Category | Rank | Elo | Win rate |
|---|---|---|---|
| Agents: Agentic slides | 6 | 1150 | 43.5% |
| Agents: Agentic slides (python-pptx) | 6 | 1155 | 45.2% |
| Agents: PPTX slides | 6 | 1157 | 45.3% |
| Agents: Agentic HTML slides | 8 | 1084 | 34.2% |
| Agents: Agentic slides (HTML) | 8 | 1077 | 33.2% |
| Agents: Agentic game dev | 14 | 1179 | 52.4% |
| Models: ASCII art | 14 | 1258 | 58.4% |
| Models: SVG | 16 | 1233 | 55.2% |
| Agents: Godot game dev | 18 | 1173 | 52.3% |
| Agents: Android native | 19 | 1178 | 50.9% |
| Models: Game dev | 20 | 1297 | 57.2% |
| Agents: HTML slides | 22 | 1067 | 35.6% |
| Agents: Slides (python-pptx) | 23 | 1152 | 43.3% |
| Models: Data visualization | 27 | 1264 | 55.7% |
| Agents: Full-stack | 29 | 1089 | 43% |
| Agents: Mobile apps | 30 | 1139 | 50.4% |
| Agents: Web apps | 33 | 1110 | 42.6% |
| Models: Code | 35 | 1262 | 53.1% |
| Models: UI components | 37 | 1258 | 53.2% |
| Models: Websites | 39 | 1258 | 52.3% |
| Models: 3D | 49 | 1198 | 49.4% |
Source: Artificial Analysis indexes and Design Arena results as published in OpenRouter’s model data, fetched Oct 15, 2026. Higher is better. Not measured by TokenCenter. See all rankings.