conv.

All stories
AIQuiet · 35h

OpenAI releases GPT-6 Sol and Luna, 50% cheaper than predecessors

Two new mid-tier models expand the GPT-6 lineup with lower API prices and broader access across ChatGPT and Codex.

newest coverage 1d agosummary written 23h ago2 pieces Newswires

What to know

  • OpenAI released two new GPT-6 models (Sol and Luna) with 50% lower API pricing than their GPT-5.6 counterparts, aimed at making advanced AI more accessible for routine and coding tasks.
  • Sol is positioned for complex coding and agentic workflows; Luna for focused, high-volume tasks; both are more efficient than predecessors despite improved capabilities.
  • The new models appear to consolidate GPT-6 to three tiers (Terra, Sol, Astra) after the planned Terra model was dropped, with staggered rollout across subscription tiers and platforms.

“We trained GPT‑6 Sol and Luna with similar methods as GPT‑6 Astra, bringing the advances behind Astra's state-of-the-art performance in professional work, factuality, coding, computer use, and alignment to faster, more affordable models.”

OpenAI · 9to5Mac ↗

OpenAI AI company

OpenAI releases GPT-6 Sol and Luna, 50% cheaper than predecessors
9to5mac.com

How it unfolded 1 development · click the chart to see its coverage articles

Peak 2 pieces in one half hour at Sep 22, 2 PM; 2 pieces over 36 hours (2 articles) Sep 22, 2:01 PM — 2 pieces · 2 articles — Newswires 2Sep 22, 2:31 PM — quietSep 22, 3:01 PM — quietSep 22, 3:31 PM — quietSep 22, 4:01 PM — quietSep 22, 4:31 PM — quietSep 22, 5:01 PM — quietSep 22, 5:31 PM — quietSep 22, 6:01 PM — quietSep 22, 6:31 PM — quietSep 22, 7:01 PM — quietSep 22, 7:31 PM — quietSep 22, 8:01 PM — quietSep 22, 8:31 PM — quietSep 22, 9:01 PM — quietSep 22, 9:31 PM — quietSep 22, 10:01 PM — quietSep 22, 10:31 PM — quietSep 22, 11:01 PM — quietSep 22, 11:31 PM — quietYesterday, 12:01 AM — quietYesterday, 12:31 AM — quietYesterday, 1:01 AM — quietYesterday, 1:31 AM — quietYesterday, 2:01 AM — quietYesterday, 2:31 AM — quietYesterday, 3:01 AM — quietYesterday, 3:31 AM — quietYesterday, 4:01 AM — quietYesterday, 4:31 AM — quietYesterday, 5:01 AM — quietYesterday, 5:31 AM — quietYesterday, 6:01 AM — quietYesterday, 6:31 AM — quietYesterday, 7:01 AM — quietYesterday, 7:31 AM — quietYesterday, 8:01 AM — quietYesterday, 8:31 AM — quietYesterday, 9:01 AM — quietYesterday, 9:31 AM — quietYesterday, 10:01 AM — quietYesterday, 10:31 AM — quietYesterday, 11:01 AM — quietYesterday, 11:31 AM — quietYesterday, 12:01 PM — quietYesterday, 12:31 PM — quietYesterday, 1:01 PM — quietYesterday, 1:31 PM — quietYesterday, 2:01 PM — quietYesterday, 2:31 PM — quietYesterday, 3:01 PM — quietYesterday, 3:31 PM — quietYesterday, 4:01 PM — quietYesterday, 4:31 PM — quietYesterday, 5:01 PM — quietYesterday, 5:31 PM — quietYesterday, 6:01 PM — quietYesterday, 6:31 PM — quietYesterday, 7:01 PM — quietYesterday, 7:31 PM — quietYesterday, 8:01 PM — quietYesterday, 8:31 PM — quietYesterday, 9:01 PM — quietYesterday, 9:31 PM — quietYesterday, 10:01 PM — quietYesterday, 10:31 PM — quietYesterday, 11:01 PM — quietYesterday, 11:31 PM — quietToday, 12:01 AM — quietToday, 12:31 AM — quietToday, 1:01 AM — quietToday, 1:31 AM — quiet 1
4 PMyesterday8 AM4 PMnow · 2:01 AM ET
  1. 1

    OpenAI shifts GPT-6 lineup from four models to three

    The release of Sol and Luna appears to mark the discontinuation of a planned GPT-6 Terra (medium) model. OpenAI is consolidating to three tiers: Terra (small), Sol (large), and Astra (extra large).

    “GPT‑6 Sol and Luna are out. Not only are they a very significant improvement across the board, but also in writing and general "you know when you try it" quality. We are also permanently reducing the API price by 50%…”
    — OpenAI · source
  2. background

    New models roll out to ChatGPT and Codex with tiered access — GPT-6 Sol and Luna are available in ChatGPT Work and Codex to Plus, Pro, Business, Enterprise, and Edu users. Luna is also accessible to Free and Go users via the desktop app. The models are not available in standard Chat mode.

  3. background

    OpenAI releases GPT-6 Sol and GPT-6 Luna models — OpenAI announced two new GPT-6 models to expand beyond the Astra model. GPT-6 Sol is optimized for complex coding and agentic workflows; GPT-6 Luna is designed for focused, high-volume tasks. Both use fewer tokens than GPT-5.6 versions and are 50% cheaper via API.