OpenAI: GPT-5.5
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...
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Benchmarking OpenAI: GPT-5.5
Coding Performance
Coding benchmarks and performance metrics for development tasks
Coding Benchmarks
| Benchmark | Score |
|---|---|
| AA Coding Index | 58.5% |
| SciCode | 55.9% |
| TerminalBench Hard | 59.8% |
| LCR | 73.3% |
| IFBench | 71.6% |
Speed & Efficiency
| Metric | Value |
|---|---|
| Output Speed | 62 tok/s |
Performance metrics from Artificial Analysis
OpenClaw Benchmarks
PinchBench measures how OpenAI: GPT-5.5 performs on real OpenClaw agent tasks: multi-step execution, tool use, recovery, latency, and cost.
Average score
#11 of 41 official models
Average time
22 runs · per OpenClaw task
Average cost
Per benchmark run
Autonomous task execution
OpenAI: GPT-5.5 shows emerging average success across OpenClaw-style benchmark runs, useful for recurring research, browser, and file-based automations.
Tool use and recovery
PinchBench tasks stress multi-step planning, tool calls, and judge-verified completion rather than single prompt coding snippets.
Agent workflow fit
Its deliberate average runtime and premium run cost help set expectations for long-running KiloClaw agents and production workflows.
Compare the full OpenClaw leaderboard on PinchBench or run OpenAI: GPT-5.5 in hosted OpenClaw agents with KiloClaw.
Best models for OpenClawReal-World Usage
Real-world usage statistics from the Kilo Code community
Weekly Token Usage
Mode Rankings (Last Week)
Where this model ranks for each built-in mode
Code
Write, modify, and refactor code
Ask
Get answers and explanations
Debug
Diagnose and fix software issues
Orchestrator
Coordinate tasks across multiple modes
Real-world metrics from the Kilo Code Leaderboard
Pricing
Cost per 1 million tokens
Example Cost
Analyzing a 10,000 line codebase (≈40k input tokens, 10k output tokens) costs approximately $0.5000
Coding Capabilities
Features and parameters relevant to coding tasks
Coding Features
Pricing details from OpenRouter
Technical Details
Architecture and implementation specifications
- Model ID
- openai/gpt-5.5
- Artificial Analysis Slug
- gpt-5-5-high
- Created
- April 24, 2026
- Tokenizer
- GPT
- Input Modalities
- file, image, text
- Context Window
- 1,050,000 tokens
- Max Completion Tokens
- 128,000 tokens
- Input Price
- $5.00 per 1M tokens
- Output Price
- $30.00 per 1M tokens
- Cache Read Price
- $0.50 per 1M tokens
- Content Moderation
- Enabled
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