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GPT-5.6

Sol, Terra, and Luna access tracker after GPT-5.6's public release.

OpenAI's GPT-5.6 model family status page for Sol, Terra, and Luna access tracking, ChatGPT plan availability, Work/Codex/API access, and safety notes.

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verifiedLast verified 2026-07-10

GPT-5.6 released

OpenAI now documents GPT-5.6 Sol, Terra, and Luna across ChatGPT, Work, Codex, and the API. Sol powers eligible reasoning options in standard ChatGPT; Terra and Luna are available in Work, Codex, and API surfaces by plan.

Release stage: Released
Standard ChatGPT: Sol in eligible reasoning options; Terra and Luna not directly selectable
Work / Codex / API: Sol, Terra, and Luna available by product and plan
Ranking impact: Marked for review only

Verify source: OpenAI GPT-5.6 release →

About GPT-5.6

GPT-5.6 is OpenAI's released July 2026 model family for more capable reasoning, coding, agentic work, cybersecurity assistance, and long-running product workflows. The family includes GPT-5.6 Sol, the flagship model; GPT-5.6 Terra, the balanced lower-cost option; and GPT-5.6 Luna, the fastest and lowest-cost option. Standard ChatGPT conversations expose Sol through eligible reasoning options, while Terra and Luna are available through Work in ChatGPT, Codex, and the OpenAI API rather than as standard ChatGPT picker options. AI Linkbase tracks GPT-5.6 as a released model family with product-specific access rules, safety caveats, and ranking review flags.

✅ Pros

+Clear new model-family signal from OpenAI preview safety documentation
+Sol, Terra, and Luna create a useful high-end to lower-cost segmentation to track
+Relevant to coding, enterprise AI, policy-risk, and frontier-model comparison pages
+Worth monitoring for ChatGPT, API, and Codex users planning model upgrades

❌ Cons

−Pricing, rate limits, and plan limits still need workflow-specific verification
−Regional and enterprise policy restrictions may change during rollout
−Ranking changes should wait for benchmarks, pricing, and real access data

Key Features

Sol, Terra, and Luna Tracking

Tracks OpenAI's GPT-5.6 family as separate versions so users do not confuse a preview or staged rollout with universal availability.

Policy-Risk Fields

Highlights access uncertainty, regional policy risk, pricing gaps, and the need for frequent verification while rollout details change.

Ranking Review Flag

Marks GPT-5.6 as important for model and coding rankings without automatically changing leaderboard positions.

Pricing Plans

ChatGPTPlan-based

✓GPT-5.6 Sol in eligible reasoning options
✓Free and Go plan limitations apply
✓Terra and Luna not selectable in standard conversations

Work / Codex / APIPlan or usage-based

✓Sol, Terra, and Luna access by product surface
✓Codex and API availability
✓Model ranking review flag

🏆 Our Verdict

GPT-5.6 is now a released OpenAI model family, but buyers should still treat it as a product-specific access decision. Sol, Terra, and Luna do not mean the same thing in standard ChatGPT, Work, Codex, and the API, so teams should verify plan limits, pricing, and safety policies before migrating production workflows.