Claude Opus 5.2 (and "5.1") status: the comparison table lists one Opus row — claude-opus-5, releasedOn 2026-07-24
No 5.1 / 5.2 row on the official page
The live Opus row in Anthropic's model overview is claude-opus-5, releasedOn 2026-07-24, lifecycle active (older minors sit in the Legacy list on the same page). Nothing supports "skipping 5.1 straight to 5.2": no row, no id, no date, no price.
Updated 2026-09-19
Four key points
Official live id
The Opus row the comparison table currently lists; the API id sits on it.
Official releasedOn
Opus 5's release date, lifecycle active.
Other generation in the same table
Fable is claude-fable-5-1 — rumours of "number skipping" usually merge the two generations.
Checked on
All four languages rest on that day's capture of the official table.
What this is
People searching "Claude Opus 5.1" and "Claude Opus 5.2" ask one question: has the next Opus shipped? Minor numbers are very much part of Anthropic's history — the Legacy list runs Opus 4 from claude-opus-4-5 to claude-opus-4-8 — so 5.1 / 5.2 are not impossible names. But as checked on 2026-09-18 the comparison table lists one Opus row, claude-opus-5 (releasedOn 2026-07-24), with no 5.1 / 5.2 row, id, date or price.
What happened
Checked 2026-09-18: the Opus row is still claude-opus-5, releasedOn 2026-07-24; the Fable row is claude-fable-5-1, releasedOn 2026-09-01. Both carry retirementNotBefore; neither has extra 5.1 / 5.2 rows.
Timeline
2026-07-24 Claude Opus 5 went GA as claude-opus-5 — the Opus row today.
2026-09-01 Claude Fable 5.1 went GA as claude-fable-5-1 (releasedOn 2026-09-01).
2026-09-18 capture of the official table: no 5.1 or 5.2 rows under Opus.
Confirmed vs caution
Officially confirmed
Official table: Opus generation releasedOn 2026-07-24 (claude-opus-5); Fable generation releasedOn 2026-09-01 (claude-fable-5-1); both lifecycle active.
⚠️ Caution
"A claude-opus-5-2 slug appeared in some cloud console" is off-site evidence: the official table captured 2026-09-18 has no 5.1 / 5.2 row and the API docs no such id. This page concludes nothing from a slug and states no date, capability or price.
Same vs differs
Same
claude-opus-5 and claude-fable-5-1 are both in the official table with API id, releasedOn and retirementNotBefore.
Differs
Neither claude-opus-5-1 nor claude-opus-5-2 is in the table: no row, no API id, no lifecycle fields.
What to do
For Opus, set claude-opus-5. If you are waiting for a next generation, trigger on a new row in the official table — not on a slug that appeared in some third-party console, which will not make your calls work.
On QCode
claude-opus-5 is on sale on QCode with real 30-day traffic. claude-opus-5-2 is unreleased, so there is no id to add; availability follows /models.
FAQ
Has Claude Opus 5.2 shipped?
Per the comparison table on the official model overview, no. That table carries one Opus row — claude-opus-5, releasedOn 2026-07-24 — while older ids sit in the Legacy list on the same page.
What about 5.1?
Also absent. The table lists neither claude-opus-5-1 nor claude-opus-5-2, so "skipping 5.1" presupposes a row that does not exist.
Why does Fable have a 5.1?
Because a generation does get minor numbers — the Fable line now reads claude-fable-5-1 (releasedOn 2026-09-01) with claude-fable-5 kept in Legacy, and Opus 4 ran from claude-opus-4-5 to claude-opus-4-8. A future Opus 5.1 would be unremarkable; it simply has no row on the official page as of 2026-09-18.
I saw a 5.2 slug in a console
That is off-site evidence: no matching row in the official table, no id in the API docs. Callability is decided by the official table and /models, not by a string seen in a console.
Which id works now?
claude-opus-5 — present in Anthropic's table and in QCode's /models, with real 30-day traffic.
When should this page be re-checked?
The moment a new Opus row appears under any name. Capture date 2026-09-18 is stated in Sources.
Sources
Anthropic's official model overview (platform.claude.com), captured 2026-09-18. The comparison table has one Opus row, claude-opus-5; older minor versions are listed under Legacy.
Set the row that officially exists
claude-opus-5 is callable on QCode, same key as fable and sonnet.
Related
Claude Opus 5 guide
The live Opus id, capabilities and prerequisites.
Claude Fable 5.2 status
The same shape of rumour on another generation.
"GPT-6 Sol" status
How to check a rumoured model from another vendor.
This page separates three tiers: what the official model table confirms, the rumour and circulating "5.1 / 5.2" claims, and what stays unconfirmed — no official id, date or price. A slug seen in some console is not release evidence, and leaked benchmarks are not used.