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GPT-5.5 Pro OpenAI
Overview
Provider OpenAI
DFO score 15.6
Performance Tier Legacy
Best For –
Released Apr 2026
Knowledge Cutoff –
Pricing
Input / 1M tokens $30.00
Output / 1M tokens $180.00
Performance
Context Window 1.1M
Throughput (tok/s) –
Latency (TTFT ms) –
Parameters –
Capabilities
Tool Use Yes
Function Calling Yes
Vision Yes
Open Source No
License –

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