GPT-6

Free and Go ($8) both get GPT-6 Luna in Chat. Plus ($20) is the cheapest plan with GPT-6 Sol and full Codex. What each ChatGPT plan buys now.

Everything OpenAI announced at DevDay 2026: GPT-6.1 Sol at $2/$10, Ultrafast, Decisions API, Agents API, cloud Codex, and what to test first.

OpenAI shipped GPT-6.1 Sol on September 29: near-Astra benchmark scores at a fifth of Astra's price, cache reads cut to $0.10 per million tokens, 1.05M context, and same-day Codex availability. The verified pricing, the Astra 6.1 safety hold, the community read, and how to run it.

GPT-6 Astra is OpenAI's max-capability model: 1.05M context, $10/$50 per million tokens, the first OpenAI model rated Critical for cyber, and new highs on Terminal-Bench 4.0 and OSWorld 2.0. What it is, what the benchmarks do and do not say, and the verified commands to try it.

A developer-first overview of the GPT-6 family: what Astra, Sol, and Luna are, what each costs per million tokens, the three new API features (async tool calling, mid-turn steering, cache-safe reasoning changes), and how to try each tier in Codex and the API today.

OpenAI DevDay 2026 is Tuesday, September 29 at Fort Mason in San Francisco, with Sam Altman's keynote livestreamed free at 10:00 a.m. PT. What OpenAI has confirmed, what Fortune and BleepingComputer have reported, which rumors are still unconfirmed, and what each would change for developers.

The latest Developers Digest demo has GPT-6 driving Codex to build a single-file Three.js world - five walkable rooms with AI-generated wall assets and even a museum room that teaches LLM concepts. Here is the verified toolchain and when this web-native 3D path wins.

GPT-6 Astra drove Codex to script a playable Mars car game in Blender, then turned the same 3D assets into cinematic trailers with Higgsfield's Blender plugin and Seedance video. Here is the verified toolchain, plugin setup, and when this workflow beats text-to-video.

Three frontier launches in 48 hours repriced the agentic workhorse tier: Grok 4.7 at $2/$6 (Sep 21), Claude Opus 5.5 at $4/$20 with $0.20 cache reads (Sep 22), and GPT-6 Sol at $2/$10 with Luna at $0.10/$0.50 (Sep 22). Same-day-verified rates, honest benchmark attribution, and a decision guide.

GPT-6 Astra built a complete yoga clothing store from one prompt in the latest Developers Digest video - generated product photography, click-through product pages, and a custom AI video hero, wired through Codex and the Higgsfield CLI. Here is the verified workflow from the docs, plus how Genjutsu re-versions a single video for every market.