2 models
Ranked by Agents' Last Exam
Reasoning Tools JSON 59.3

GPT-6 Astra is OpenAI's most capable model for complex reasoning, coding, computer use, research, and document creation.

openai/gpt-6-astra 2026-09-04 1.05M context $10/M input $50/M output
35 providers
Reasoning Tools JSON 56.4

OpenAI model for complex coding and agentic workflows

openai/gpt-6-sol 2026-09-22 1.05M context $2/M input $10/M output
33 providers