Introducing GPT-5.5 | OpenAI
The new model handles 2M tokens and costs 40% less than GPT-5...
OpenAI today launched GPT-5.5, the latest iteration of its flagship large language model series, marking a significant leap in performance and cost efficiency. The model boasts a massive 2 million token context window, enabling it to process entire codebases, lengthy legal documents, or multi-hour meeting transcripts in a single pass. Inference speeds have been improved by 30% over GPT-5, while API pricing has been slashed by 40%, making it more accessible for enterprise deployments and high-volume applications.
Beyond raw specs, GPT-5.5 introduces enhanced multimodal understanding, allowing it to analyze images, audio, and video with greater accuracy. Reasoning benchmarks show a 15% improvement on complex math and logic problems, and the model demonstrates better adherence to nuanced instructions, reducing the need for prompt engineering. OpenAI has also fine-tuned safety filters and reduced hallucination rates by 20% in internal tests. GPT-5.5 is available now through the OpenAI API and ChatGPT Plus, with a dedicated tier for enterprise customers.
- 2 million token context window for processing large documents or codebases in one go
- 30% faster inference and 40% lower API pricing compared to GPT-5
- 15% improvement on reasoning benchmarks and 20% reduction in hallucination rates
Why It Matters
GPT-5.5 makes advanced AI more affordable and capable, enabling complex enterprise workflows at scale.