Prompt Cache Diagnostics now generally available in Responses API for GPT-5.6+
Developers using the Responses API can now diagnose and optimize prompt caching behavior, helping identify cache misses and improve reuse efficiency.
Evidence
+Prompt Cache Diagnostics is now generally available in the Responses API for GPT-5.6 and later supported models.
Compare cache reuse against a previous response, identify reasons for cache misses, and follow troubleshooting guidance to improve cache reuse.
OpenAI expands journalism support initiatives across education and news sectors
OpenAI is broadening its commitment to journalism by providing tools, training, and partnerships for students, educators, journalists, and news organizations.
Evidence
+OpenAI expands initiatives to support journalism from classrooms to newsrooms
OpenAI is expanding support for journalism with tools, training, and partnerships for students, educators, journalists, and news organizations.
ChatGPT for Teachers expansion to 55 U.S. school districts
Educators and staff: Over 100,000 more educators and staff across 55 U.S. school systems now have access to secure AI tools, training, and support through ChatGPT for Teachers.
Evidence
+ChatGPT for Teachers is expanding to 55 U.S. school systems, bringing secure AI tools, training, and support to over 100,000 more educators and staff.
GPT-5.6 Sol pricing reduced with 20% lower input and 33% lower output costs
API customers using GPT-5.6 Sol will see significant cost savings, with input tokens at $4/M and output tokens at $20/M through at least November 21, 2026.
Evidence
+GPT-5.6 Sol now costs $4 per million input tokens and $20 per million output tokens, representing 20% lower input pricing and 33% lower output pricing. GPT-5.6 Sol's promotional pricing is available at least through November 21, 2026.
ChatGPT Enterprise highlighted for enterprise productivity and advisory services
HSP GRUPPE case study demonstrates ChatGPT Enterprise use cases in professional services (tax advisory), positioning it as a productivity tool for knowledge workers
Evidence
+How HSP GRUPPE builds AI capabilities for tax advisory
Discover how HSP GRUPPE uses ChatGPT Enterprise to boost productivity, improve work quality, and create more capacity for tax advisory and client service.
Fast mode now supports long-context requests (272K+ tokens) for GPT-5.6 models with 2.5× speed improvement
Developers using GPT-5.6 Sol, Terra, or Luna can now use Fast mode for long-context prompts exceeding 272K tokens, achieving significantly faster response times.
Evidence
+Fast mode now supports long-context requests for GPT-5.6 Sol, GPT-5.6 Terra, and GPT-5.6 Luna. As of today, long-context prompts exceeding 272K tokens can run in Fast mode, delivering speeds up to 2.5× faster than the Standard tier.
Priority processing renamed to Fast mode with updated performance positioning
API users using priority processing will see their requests automatically migrated to the new Fast mode offering; branding change from 'Priority processing' to 'Fast mode'
Evidence
−Priority processing
+Fast mode
We're also introducing Fast mode in the API, which replaces our Priority Processing offering.
Developers have access to new API endpoints v1/audio/transcriptions and v1/realtime for integrating transcription capabilities into their applications.
OpenAI releases field report on AI coding agents for scientific computing
Scientists and researchers can learn how AI agents are being applied to accelerate genomics research and scientific software development workflows.
Evidence
+Scientific computing in the age of agentic AI
A new field report shows how scientists use AI coding agents to modernize scientific computing, accelerating software development and discovery in genomics and beyond.