TAU2
Score
0.94
GPT-5.5 (xhigh) is a high-performance variant of OpenAI's GPT-5 series, optimized for superior reasoning, complex code generation, and advanced multimodal tasks. It represents a flagship model designed for demanding applications requiring top-tier intelligence and capability.
Benchmark history
Score
0.94
Score
0.61
Score
0.74
Score
0.76
Score
0.56
Score
0.44
Score
0.94
Score
59.1
Score
60.2
Plan availability
Apertis Coding Plan is a subscription-based AI coding service providing unified access to 30+ AI models (GPT-5.4, Claude Opus 4.6, Gemini 3.1 Pro, and more) through a single API key. Designed for developers using coding agents like Claude Code, Cursor, Cline, and OpenCode, it offers predictable monthly pricing, free prompt caching, auto-failover, and quota-based billing across OpenAI, Anthropic, Google, and other providers.
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OpenCode Zen is a curated service providing reliable, optimized AI models for coding agents, with pay-as-you-go pricing and tested performance.
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