External-first evidence · near-real-time source measurements and periodic public benchmarks. AI Fast Now direct measurements are historical; paid emergency verification is OFF by default.
Anthropic · Previous generation
Claude Opus 5
An earlier Opus release remains listed as active in Anthropic’s lifecycle table. See the current family above for its successor.
Independent external model-route observations
Checking verified public snapshots. Participation alone does not establish fresh performance.
Official API model IDclaude-opus-5
Release channelstable · active
LifecycleActive in the official lifecycle table
Retirement commitmentNot before 2027-07-24
Retirement not before 2027-07-24; no fixed retirement date announced. Official facts verified 2026-10-02.
01
Model identity and lifecycle
Family: Claude. Generation: 5. This is a previous generation; it is preserved separately from the current lineup. The catalog uses the API identifier shown above.
02
How to interpret performance
This model is assigned to ongoing independent API measurements. External source cycles and comparable workload cadences remain separate. Normal paid direct measurements are on emergency standby. Sampling cadence and request settings remain explicit. Measurements are comparable only when model revision, region, profile, prompt version, reasoning, output limit and cache policy match. Missing data never means a provider outage.
Claude consumer app performance may differ from direct API observations. No score, throughput estimate or best-time prediction is inferred from official specifications.
03
Official evidence
Anthropic model documentation · Verified 2026-10-02. Availability and lifecycle can change; the documented source governs the API contract.
