claude-opus-4-1-20250805: model retirement on August 5, 2026
Anthropic documents a model retirement affecting claude-opus-4-1-20250805 on August 5, 2026. The source lists claude-opus-4-8 as a replacement identifier.
- Provider
- Anthropic
- Surface
- Claude API
- Change type
- model retirement
- Effective
- Announced
- Last verified
What breaks
Code or configuration containing claude-opus-4-1-20250805 is in scope for this Anthropic model retirement on August 5, 2026.
- Anthropic's official documentation identifies claude-opus-4-1-20250805 as affected by this model retirement.
Affected identifiers and fields
Search your code, environment variables, gateway configuration, and stored request templates for these exact values.
claude-opus-4-1-20250805
Claude Opus 4.1 model
Migration target
The official source lists claude-opus-4-8 as a replacement identifier. Test the migration against current provider documentation before production.
claude-opus-4-8
What to do
Search repositories and deployment configuration for claude-opus-4-1-20250805. The official source lists claude-opus-4-8 as a replacement identifier. Test the migration against current provider documentation before production.
Official source receipts
These provider pages support the dates, identifiers, symptoms, and migration direction recorded above.
Anthropic · Official documentation
Anthropic · Official documentation