GPT-5.5
OpenAI
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...
What is 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...
Specifications
- Developer: OpenAI
- Context window: 1.1M tokens
- Max output: 128K tokens
- Input modalities: file, image, text
- Output modalities: text
- Input price: $5.00 per 1M tokens
- Output price: $30.00 per 1M tokens
- Knowledge cutoff: 2025-12-01
- Supported parameters: include_reasoning, max_completion_tokens, max_tokens, reasoning, response_format, seed, structured_outputs, tool_choice, tools
Use GPT-5.5 with PromptLayer
PromptLayer lets teams manage, evaluate, and observe prompts that run on GPT-5.5 alongside every other model in their stack. Version prompts, run evals across models, and ship safe rollouts from the same dashboard.
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