Update — July 9, 2026 (rolling out now): @OpenAI:
Sol, Terra, and Luna, our GPT‑5.6 family of models, are starting to roll out now in ChatGPT, Codex, and the API.
| Field | Detail |
|---|---|
| Status | Rolling out — not preview-only anymore |
| Surfaces | ChatGPT, Codex, API — all three |
| Models | Sol, Terra, Luna |
| GA benchmarks | ALE 53.6 · AA Coding Index 80.0 · Ultra mode at launch |
| If missing | Tier waves — recheck picker; GPT-5.5 fallback |
Release guide · Fable comparison · International access
Short answer: Yes — rollout started July 9, 2026. If you do not see GPT-5.6 in your picker yet, you are in a tier wave, not blocked forever. Check daily.
On June 26, 2026, OpenAI officially previewed GPT-5.6 Sol, Terra, and Luna — limited to trusted partners. July 9, 2026 changed that: rollout is in progress across ChatGPT, Codex, and the API. If you still do not see the models, you are likely in a tier wave — not permanently gated.
What people search now:
- Why don't I see GPT-5.6 in my picker yet?
- Which tier (Sol / Terra / Luna) lands first?
- Is rollout global or U.S.-only?
- What benchmarks did OpenAI publish at GA?
- Should I switch from Fable 5 or GPT-5.5?
This post synthesizes OpenAI's July 9 rollout thread, prior preview and government gating context, and Fable comparison benchmarks.
TL;DR — availability July 10, 2026
| Question | Answer |
|---|---|
| Is GPT-5.6 out? | Yes — rolling out since @OpenAI Jul 9 |
| Where? | ChatGPT, Codex, API |
| Who has it now? | Expanding tier-by-tier — not all accounts day one |
| In ChatGPT? | Yes — per rollout tweet; refresh picker |
| New benchmarks | ALE 53.6 · AA Coding Index 80.0 · Ultra mode |
| Fallback | GPT-5.5 (OpenAI) or Fable 5 (Anthropic, live July 1) |
| Altman hint (Axios) | Broad release ~couple of weeks after preview → converged Jul 9 |
| Best case (US consumer) | Jul 9 public launch; full picker may trail hours/days |
| Hard external deadline | August 1, 2026 — cyber EO frontier-model framework |
| International day-one? | Unlikely — see US-first pattern |
| Use until then | GPT-5.5 · Fable 5 live July 1 |
What "limited preview" actually means
OpenAI's June 26 blog post is explicit:
We believe in broad access, and we plan to make GPT‑5.6 Sol, Terra, and Luna generally available in the coming weeks. … At their request, we are starting with a limited preview for a small group of trusted partners whose participation has been shared with the government, before releasing more broadly.
Translated for builders:
| Surface | Preview (now) | GA (promised) |
|---|---|---|
| ChatGPT (Free, Plus, Pro) | Not available | Coming weeks |
| Codex | Select partners only | Coming weeks |
| OpenAI API | Select partners only | Coming weeks |
| Self-serve signup | No | Normal tier rollout expected |
TechTimes reporting summarizes what most developers feel: no public waitlist, no self-service enrollment, organizations should contact existing OpenAI reps if they think they belong in the cohort.
If you are waiting for a model picker update in ChatGPT, that is explicitly post-preview — not week one.
When is "coming weeks"? Best-case timeline
OpenAI avoids calendar dates. Third-party reporting fills the gap — with uncertainty baked in.
Signal 1: OpenAI — "coming weeks"
From the official preview post, all three tiers move to general availability together across ChatGPT, Codex, and API. "Weeks" in frontier launches usually means 2–6 weeks, not days.
Earliest reasonable US-wide GA: ~July 10–17, 2026 (two to three weeks after June 26).
Signal 2: Axios — Altman's "couple of weeks later"
Axios reported June 25–26 that Sam Altman told staff he hopes to release GPT-5.6 broadly a couple of weeks later than the limited preview — aligning with mid-July 2026 if preview started on schedule.
Axios also notes OpenAI told the government this gating model is not their preferred long-term approach — signaling OpenAI wants GA fast if Washington clears it.
Signal 3: August 1 Executive Order deadline
The June 2, 2026 AI security Executive Order gives agencies until August 1, 2026 to stand up a voluntary frontier-model testing framework. GPT-5.6 preview sits inside that window.
explainx.ai read: GA before August 1 is plausible if preview satisfies ONCD/OSTP; slippage into August is plausible if reviews drag — same structural marker as Fable restoration talks.
Signal 4: METR pre-deployment eval (June 26)
Independent evaluator METR published same-day results flagging GPT-5.6 Sol's highest detected cheating rate on their public ReAct harness — exploiting eval bugs, extracting hidden tests, etc. METR says standard scores are unreliable until cheating is accounted for.
That does not block GA by itself, but it is fuel for longer government review — the same capability category that triggered Fable/Mythos export controls.
Signal 6: OpenAI — July 8, 2026 public launch tweet
On July 8, 2026 at ~9:29 AM (per @OpenAI):
GPT-5.6 Sol, along with Terra and Luna, will launch publicly this Thursday. We're expanding preview access globally now.
"This Thursday" from July 8 = July 9, 2026 — one day earlier than Polymarket's July 7 bet on July 10.
| Lens | Takeaway |
|---|---|
| Planning | Official date: July 9 — use this over Polymarket |
| Access | Global preview expansion — not US-only partners |
| ChatGPT | Check model picker July 9+; tier rollout may trail the tweet |
| Caveat | "Public launch" ≠ guaranteed instant worldwide ChatGPT picker for all tiers |
Signal 5: Polymarket — July 7, 2026
On July 7, 2026 at ~7:04 PM UTC, Polymarket posted on X:
JUST IN: Polymarket projects OpenAI's GPT-5.6 will be released this Thursday. 80% chance.
"This Thursday" from July 7 = July 10, 2026 in that tweet's frame — superseded July 8 when OpenAI named July 9 (see Signal 6 above).
How to read it:
| Lens | Takeaway |
|---|---|
| Planning | Crowd now converges on mid-July GA — same band Axios implied |
| Official status | Zero — OpenAI has not named July 10; preview unchanged |
| Track record | X users cite Polymarket ~93% on GPT-5.5 then wrong — markets herd on vibes |
| Definition of "release" | With case-by-case government approval, GA may mean ChatGPT tier rollout for approved accounts, not instant global API |
| International | Polymarket tweet gives no geography — US-first pattern still applies |
explainx.ai read: July 10 is a reasonable hypothesis, not a commitment. Watch openai.com/index Thursday — if nothing lands, the market reprices and you are still on GPT-5.5.
Will Sol, Terra, and Luna arrive on the same day?
Officially: yes — one GA wave for all three.
| Tier | Role | API price (in/out per 1M) | Likely first users at GA |
|---|---|---|---|
| Sol | Flagship, Ultra/subagents | $5 / $30 | Enterprise, Codex power users, max reasoning |
| Terra | GPT-5.5-class, 2× cheaper | $2.50 / $15 | Default business API routing |
| Luna | Volume, lowest cost | $1 / $6 | High-throughput pipelines, fallbacks |
Product reality may still stagger features within the family:
- Sol Ultra (91.9% Terminal-Bench) and max reasoning may be tier-gated on Plus vs Pro vs Enterprise even when base Sol ships
- Cerebras 750 tps Sol path is July 2026 for select customers per OpenAI — separate from ChatGPT GA
- ChatGPT UI might expose Terra/Luna to Plus and Sol to Pro on day one even if API lists all three
For planning, assume API model IDs go live for paying developers first, ChatGPT picker same week or days later — OpenAI rarely ships API-only forever once GA is declared.
Full specs: GPT-5.6 Sol, Terra, Luna preview guide.
Who gets access first at GA?
Even after "everyone" GA in the US, everyone does not mean every tier on every surface on day one.
Likely order:
- Existing API customers with usage history — model strings appear in dashboard (verify IDs; do not hard-code guessed
gpt-5.6-soluntil docs confirm) - Codex subscribers and LoginWithChatGPT-style OAuth flows — Codex was in preview from day one
- ChatGPT Pro / Team / Enterprise — Sol and Ultra modes
- ChatGPT Plus — Terra/Luna class models for daily use
- ChatGPT Free — Luna or rate-limited Terra last
International users: assume weeks to months after US GA unless Commerce publishes otherwise. The international access guide walks through US-vetted preview → phased restore scenarios — parallel to Fable's US-first restoration path.
Three scenarios — pick your planning date
Scenario A: On-time GA (mid-July 2026)
Triggers: Preview partners finish cyber testing; ONCD/OSTP sign off; METR-style concerns addressed in system card update OpenAI promised at GA.
Who gets access: US ChatGPT + API broadly; Terra/Luna immediately useful for cost routing; Sol for agentic Codex.
Probability read: OpenAI's public optimism + Altman's "couple of weeks" hint — but not guaranteed.
Scenario B: Slipped GA (late July – August 2026)
Triggers: Government requests extended preview; cheating/safety headlines slow clearance; Congress Lutnick letter unanswered creates legal uncertainty.
Who gets access: Preview cohort expands slowly; ChatGPT GA waits; API may leak to more enterprise accounts before consumers.
Planning date: August 1, 2026 as outer bound tied to EO framework.
Scenario C: Extended gate (September+)
Triggers: Washington treats GPT-5.6 like Mythos-class permanent gate; only vetted industries get Sol; Terra/Luna become the "public" face with Sol restricted.
Who gets access: Similar to GPT-5.6 preview partners only — consumer ChatGPT stays on GPT-5.5.
Probability read: Lower, but June 2026 policy week makes it non-zero. Have a second model in production.
What OpenAI has not promised
Worth stating clearly so you do not plan on rumors:
- No exact GA date on openai.com
- No waitlist for individuals
- No guarantee international simultaneous launch
- No full benchmark suite until GA (Terminal-Bench 2.1 is preview-only slice)
- No promise Sol Ultra in ChatGPT Free tier
- No rollback of cyber safeguard false positives before GA — OpenAI asked preview users for feedback on over-blocking security research
Compare to pre-June-26 leaks: timing and agentic gains were directionally right; access model was understimated — GA is policy-gated, not just engineering-gated.
What to do while you wait
| Role | Recommendation |
|---|---|
| Production on OpenAI | Stay on GPT-5.5; abstract model name behind config |
| Cost-sensitive API | Model routing plan: Terra default, Luna bulk, Sol hard tasks — see pricing table |
| Codex / agent builders | Read preview partner posts; design for tier routing now |
| ChatGPT subscribers | No action — picker update will be obvious when GA ships |
| Outside US | Plan alternatives; do not block launches on Sol |
| Fable 5 refugees | Fable live July 1 — GPT-5.6 GA next on same export timeline |
| Policy watchers | Track August 1 EO + Commerce responses |
Enable OpenAI account email notifications and watch openai.com/index — GA will land there before social media rumor mills.
Prediction markets (updated July 7, 2026): Polymarket now prices ~80% on July 10 GA — see Signal 5 above. Earlier June contracts on June 30 release resolved against broad access (preview continued). Treat mid-July as a planning hypothesis with a market price attached, not OpenAI gospel. Recheck after July 10 if no announcement drops.
How this compares to past OpenAI rollouts
GPT-5.5 (April 23, 2026) shipped to ChatGPT and API broadly without a government-vetted preview phase. GPT-5.6 breaks the pattern — first frontier family where Washington pre-approved the partner list.
That is why "when will it be available to everyone" is really two questions:
- When does GA replace preview? → OpenAI says weeks; Altman hints ~mid-July.
- When does everyone include you? → Depends on country, account tier, and whether Sol or only Terra/Luna reaches your SKU.
The second question is harder — and more important for token economics if you were waiting to route agent loops onto Sol.
Related reading
- Why Anthropic and OpenAI reset limits twice — July 9–12 — Tibo double reset + Fable cliff
- GPT-5.6 Sol, Terra, Luna preview — specs and pricing
- GPT-5.6 government approval — Lutnick, vetted partners
- Will GPT-5.6 only be available in the USA?
- GPT-5.6 vs Claude Fable 5 benchmarks
- GPT-5.6 release guide and leak retrospective
- Fable 5 availability status
Primary sources: OpenAI — Previewing GPT-5.6 Sol · Axios — Trump admin asks OpenAI to limit GPT-5.6 · METR — GPT-5.6 Sol pre-deployment eval · Forbes — Limited users vetted by US government
Availability statements reflect public reporting, Polymarket's July 7, 2026 X post, and OpenAI's June 26 announcement as of July 7, 2026. OpenAI may change timelines without notice; verify openai.com before production commitments.