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GPT-5.5 (high)

OpenAI

GPT-5.5 (high) is a proprietary OpenAI model, ranked highly for intelligence but with a relatively high cost. This model supports text and image input, while generating text output. It stands out for its reasoning capabilities, including extended thinking or chain-of-thought reasoning, to effectively solve complex problems.

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Model Specifications

Technical information and release details.

Developer

OpenAI

Multimodal Support

Yes

Context Window

922k

$11.25

Speed (tokens/s)

82.0

Latency (s)

26.60

Release Date

4/23/2026

Performance Statistics

The model's intelligence score is the average of these benchmark scores

Detailed Benchmarks

Compare GPT-5.5 (high) with other top models in specific domains.

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