GPT-5 is OpenAI's most advanced language model, featuring enhanced reasoning capabilities with 80% fewer factual errors than o3. It supports a 400K total context (272K input + 128K output), advanced tool calling with reliable chaining of dozens of calls, and a new verbosity parameter for response length control. Ideal for complex reasoning, multi-step planning, and applications requiring high accuracy.
Input: Text, Image
Output: Text
Providers
openai
Credits
Context400k
Max Output128k
Input$1.25/1M
Output$10.00/1M
Cache Read$0.125/1M
Cache Write—
helicone
Credits
Context400k
Max Output128k
Input$1.25/1M
Output$10.00/1M
Cache Read$0.125/1M
Cache Write—
azure
Credits
Context400k
Max Output128k
Input$1.25/1M
Output$10.00/1M
Cache Read$0.130/1M
Cache Write—
openrouter
Credits
Context400k
Max Output128k
Input (Max)$1.32/1M
Output (Max)$10.55/1M
Cache Read—
Cache Write—
Quick Start
Use OpenAI GPT-5 through Helicone's AI Gateway with automatic logging and monitoring.