
OpenAI's API for GPT models via the Responses and Chat Completions APIs. Supports chat, reasoning, vision, tool calling, streaming, speech-to-text, realtime voice, image generation and embeddings; official SDKs for Python and JavaScript/TypeScript.
gpt-image-2 and gpt-image-2-2026-04-21 leave the API on Feb 10, 2027. Move to gpt-image-2.6-sunburst or gpt-image-2.6-flare.
gpt-5.5-cyber-preview leaves the OpenAI API on February 1, 2027. Move to the most capable cyber model your account can use.
GPT-Live can now dial out. Send one Live API request with a phone number and your SIP trunk details. Open to every organization.
gpt-6-cyber helps investigate, reproduce and verify fixes for vulnerabilities. It needs Daybreak Red approval and an IP allowlist.
GPT Image 2.6 Sunburst and Flare add a complexity setting, markup-guided edits, SVG output and animated GIFs on the Image API.
OpenAI Evals are read-only since Oct 31, 2026 and the Evals dashboard and API shut down Nov 30. OpenAI points to Promptfoo.
gpt-6-rosalind adds biological reasoning and scientific tool use. Only orgs approved for Rosalind Research can use it.
openai-node 7.44.0: Live Decision item events are now unions, so item.content and item.role may not compile. Check the item shape first.
Link an API organization you own to an eligible Pro or Business plan and get monthly credits that don't roll over.
GPT-6.1 Terra is a fast GPT-6 model for visual reasoning, computer use and writing: 1.05M context, $1 in and $5 out per 1M tokens.
openai-node 7.43.0 and openai-python 3.37.0: Decisions question instructions can be a string or a list of parts. Check the type first.
Decisions API leaves beta: 400 questions per request, prompt caching, images in instructions and JSON input.
Set agent.service_tier to ultrafast for faster tokens; hosted sandboxes can now make spreadsheets, slides and Word files.
GPT-Live voice sessions can now call the Decisions API directly, or trigger decisions as transcript deltas arrive.
Describe a voice in text and POST it to /v1/audio/voices. Creating it is free; up to 100 per org; works only with GPT-Live.
Set prompt_cache_options.ttl to 12h in the Responses API (GPT-5.6 and later). Cache writes cost 2.5x input; reads stay at the usual rate.