OpenAI: GPT-5

openai/gpt-5

Released Aug 7, 2025400,000 context

$1.25/M input tokens$10/M output tokens$10/K web search

GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.

OpenAI: GPT-5

openai/gpt-5

Released Aug 7, 2025400,000 context

$1.25/M input tokens$10/M output tokens$10/K web search

GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.

Recent activity on GPT-5

Total usage per day on OpenRouter

Prompt

874M

Reasoning

121M

Completion

43.9M

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.