Anthropic · Model release
Claude Sonnet 5: historical mid-tier launch snapshot
This June 2026 launch snapshot is superseded by Sonnet 5.5. Compare current model status and dated benchmark configurations before using the older result for a new selection.
What changed
- Anthropic positioned Sonnet 5 as the everyday tier with a million-token context window.
- Effort controls and thinking behaviour change latency and spend on harder tasks.
- Provider and cloud-catalogue availability is model-version and region specific; use current vendor listings.
Best fit
- Everyday generation
- Short well-scoped tasks
- Teams standardising on Anthropic
What to be careful about
- Do not transfer task-cost or quality conclusions across models without matching harness, effort, token accounting and run conditions.
Dataset snapshot: Claude Sonnet 5 is also represented in the checked comparison dataset. Prices and benchmark figures carry their own field dates.