What is the latest Claude Opus model?

As of this update, the latest is Claude Opus 4.8, API ID "claude-opus-4-8". Confirm the current model and its release date on Anthropic's official model documentation.

How do I find the API ID for a specific Opus version?

Opus API IDs follow the pattern claude-opus- - , e.g. "claude-opus-4-8" for 4.8 and "claude-opus-4-7" for 4.7. Verify exact strings in the official model list.

How will I know when a new Opus model is released?

Watch Anthropic's official news/announcement page, the model documentation and the pricing page. Reputable tech press and developer communities often surface it too, but treat those as secondary.

Claude Opus Release Tracker: Latest Version, Dates & API IDs

A fast, evergreen reference for "what's the latest Claude Opus, and what came before it?" — built to be updated the moment a new model ships.

Verify this

Release dates and pricing below are working values pending verification against Anthropic's official pages. Entries marked verify still need an authoritative source.

Latest Claude Opus version

The current release is Claude Opus 4.8, positioned around coding, agentic reliability, honesty, dynamic workflows and effort control. For the full rundown, see the feature breakdown and the model reference page.

Claude Opus version timeline

Fig. 1 — TimelineClaude Opus releases (newest first)

Claude Opus 4.8LatestMay 28, 2026verify
claude-opus-4-8
Positioned as the strongest Opus for coding and agentic, multi-step work, with better honesty, dynamic workflows and effort control.
Claude Opus 4.7Earlier in the 4.x seriesverify
claude-opus-4-7
The prior Opus release. Strong coding and agentic capabilities; the direct predecessor 4.8 is compared against.
Earlier Claude 4 Opus releasesSee official docsverify
Anthropic shipped earlier 4.x Opus models. We'll add each with a verified date and API ID rather than guess.

We track confirmed releases here. Earlier 4.x entries are intentionally omitted until each date is verified — we don't list dates we can't source.

What changes between Opus versions?

Across the 4.x line, the recurring story isn't a single magic number — it's steady improvement along a few axes. Knowing them tells you what to re-test on every upgrade.

Fig. 2 — What tends to moveThe axes that usually improve

Coding

Agentic reliability

Honesty / safety

Controls (effort)

When a new Opus ships, these are the areas worth re-benchmarking on your own tasks.

API IDs by version

Version	API model ID	Status
Claude Opus 4.8	`claude-opus-4-8`	Latest
Claude Opus 4.7	`claude-opus-4-7`	Previous
Earlier 4.x Opus	claude-opus-4-x	Verify on docs

Tip

Opus API IDs follow a predictable pattern: claude-opus-<major>-<minor>. Centralize this string in your codebase so each upgrade is a one-line change — see the API guide.

Pricing by version

Version	Input / 1M	Output / 1M
Claude Opus 4.8	$5	$25
Other versions	Confirm on Anthropic's pricing page

How to know when a new Opus model is released

Anthropic's announcement page — the primary, canonical source.
The model documentation & pricing page — where the new API ID and rates appear.
This tracker — we update the timeline and tables when a release is confirmed.

Our take

Bookmark this page. When the next Opus lands, start here for the API ID and headline changes, then jump to the comparison to decide whether to upgrade.

Claude Opus Release Tracker: Latest Version, Dates, Features and API IDs