ChatGPT 5.6 is OpenAI's consumer and API flagship in June 2026 — balancing deep reasoning with the broadest plugin, Custom GPT, and developer ecosystem in the industry.
What's new in 5.6
Improved chain-of-thought for math and coding, faster voice mode latency, tighter Azure enterprise compliance, and expanded structured outputs for agent frameworks. Vision, browsing, and DALL·E image generation remain integrated.
Context & limits
Approximately 256K tokens in API tier — shorter than Claude Fable 5 (1M) or Gemini 3.5 (2M+) but sufficient for most daily workflows. Max output around 64K tokens.
Pricing
ChatGPT Plus ~$22/mo. API flagship tier approximately $12/$48 per million input/output tokens. Team and Enterprise plans add SSO, admin controls, and higher rate limits.
Best use cases
General productivity, multimodal creative work, teams on Microsoft/Azure, and products needing the largest third-party integration catalog. Pair with our ChatGPT vs Claude comparison.
