GPT-5.5
🧠 AI Modelopenai
OpenAI's frontier model for complex workloads with 1M+ context and improved reasoning.
GPT-5.5 is OpenAI's frontier model optimized for complex professional workloads, succeeding GPT-5.4. It delivers enhanced reasoning capabilities, higher reliability, and better token efficiency on hard tasks. The model supports a context length of 1,050,000 tokens, allowing processing of extensive documents or codebases. Input modalities include file, image, and text, while output is text. Additional features include structured outputs, reasoning with status, function calling, and seed-based reproducibility. On benchmarks like agenticgamedev, it achieves an ELO of 1211 (rank #5), and on agenticslides, ELO 1150 (rank #7). The model is available via OpenRouter with the ID 'openai/gpt-5.5'.
💡Highlights
- ├─1.05M token context window
- ├─Stronger reasoning & reliability
- └─$30/M output tokens
🎯For
- ├─AI researchers
- ├─enterprise developers
- └─power users