Migrating off claude-opus-4-1-20250805 — retirement date and replacement
Anthropic is retiring claude-opus-4-1-20250805 on 2026-08-05 — in 6 days. The provider’s documented replacement is claude-opus-4-8. This page is built from Anthropic’s official deprecation notice and is rechecked weekly; the source link is below.
When is claude-opus-4-1-20250805 being deprecated?
| Model | Provider | Retires | Replacement |
|---|---|---|---|
| claude-opus-4-1-20250805 | Anthropic | 2026-08-05 | claude-opus-4-8 |
Source: Anthropic deprecation notice · announced 2026-06-05
What should I migrate claude-opus-4-1-20250805 to?
Anthropic documents claude-opus-4-8 as the successor. Migrating within the same provider keeps your endpoint, authentication and region behaviour unchanged — the measured latency below does not move when you switch models on the same host.
Measured latency of the Anthropic API host
| Region | p50 TTFB | p95 | Uptime | Probes |
|---|---|---|---|---|
| Asia (Tokyo) | 251 ms | 386 ms | 100% | 289 |
| Europe (Germany) | 201 ms | 494 ms | 100% | 290 |
| South America (São Paulo) | 213 ms | 385 ms | 100% | 288 |
| US (Central) | 111 ms | 272 ms | 100% | 289 |
Edge latency to the provider’s API host over the last 24 hours, measured from 4 regions. This measures the endpoint, not the model: swapping models on the same host does not change these figures, which is exactly why they are useful when deciding whether to stay with Anthropic or leave. Compare providers →
How is this calendar maintained?
Entries are pulled from provider documentation by an automated weekly job and every one carries a link to its source. Nothing is inferred from blog posts or social media. When a provider changes a date, the change appears here after the next run and is visible in the changelog. The full calendar across all providers is on the deprecations page, and this provider’s own list is at Anthropic deprecations.