# Anthropic Claude Opus 4 — deprecation status

> Yes — Claude Opus 4 is retired. Anthropic deprecated it on April 14, 2026 and shut it down on June 15, 2026; API requests to it now fail. The recommended replacement is Claude Opus 4.8.

The Opus that launched the Claude 4 generation and introduced extended thinking with tool use. It was retired in June 2026 on two months notice, alongside Sonnet 4 — the first time Anthropic retired an entire generation in one announcement.

## Facts

| Field | Value |
| --- | --- |
| Provider | Anthropic |
| Model id | `claude-opus-4-20250514` |
| Status | Retired |
| Aliases | `claude-opus-4-0` |
| Released | May 14, 2025 |
| Deprecated | April 14, 2026 |
| Shutdown | June 15, 2026 (45 days ago) |
| Last verified | July 30, 2026 |

## Replacement

- **Claude Opus 4.8** (`claude-opus-4-8`) · recommended — https://modeldeprecations.dev/anthropic/claude-opus-4-8
  - Opus 4.7 and later reject temperature, top_p and top_k with a 400 error when set to a non-default value. Remove them from the request rather than tuning them down. Extended thinking has also been replaced by adaptive thinking: thinking.type: enabled is no longer accepted on Opus 4.7 and later.
  - Parameters it accepts: https://modelparams.dev/models/anthropic/claude-opus-4-8

```diff
- "model": "claude-opus-4-20250514"
+ "model": "claude-opus-4-8"
```

## FAQ

### When did Anthropic Claude Opus 4 shut down?

Anthropic Claude Opus 4 shut down on June 15, 2026. API requests to it fail from that date onward.

### What replaces Anthropic Claude Opus 4?

Anthropic recommends Claude Opus 4.8 (`claude-opus-4-8`) as the replacement for Anthropic Claude Opus 4. Opus 4.7 and later reject temperature, top_p and top_k with a 400 error when set to a non-default value. Remove them from the request rather than tuning them down. Extended thinking has also been replaced by adaptive thinking: thinking.type: enabled is no longer accepted on Opus 4.7 and later.

### Is Anthropic Claude Opus 4 still available?

No. Anthropic Claude Opus 4 is retired and no longer served — it was shut down on June 15, 2026. Calls to it return an error.

### How do I migrate from Anthropic Claude Opus 4 to claude-opus-4-8?

Swap the model id in your API call: replace "claude-opus-4-20250514" with "claude-opus-4-8". Opus 4.7 and later reject temperature, top_p and top_k with a 400 error when set to a non-default value. Remove them from the request rather than tuning them down. Extended thinking has also been replaced by adaptive thinking: thinking.type: enabled is no longer accepted on Opus 4.7 and later.

### Does this apply to claude-opus-4-0 too?

Yes. Anthropic Claude Opus 4 is also published as `claude-opus-4-0`; that id shares the same lifecycle dates as `claude-opus-4-20250514`.

## Sources

- [Anthropic model deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations) — accessed 2026-07-30

---

Canonical page: https://modeldeprecations.dev/anthropic/claude-opus-4-20250514
JSON: https://modeldeprecations.dev/api/v1/models/anthropic/claude-opus-4-20250514.json