Anthropic · Chat and coding
Claude: next release
Next Claude release: Opus, Sonnet and other model lines, API status and migration checks.
API access is not confirmed here
This model is not listed in the catalog retrieved for this page. A developer announcement or provider preview does not confirm access through API Stock. An integration date and request price have not been published here.
What the sources establish
Anthropic's reviewed newsroom includes Opus 5.5, Sonnet 5.5 and Haiku 5.5 announcements. A change to one Claude line does not announce an equivalent upgrade to every other line or to this site's integration.
Prepare a useful comparison
Use a long document, a multi-file code change and a tool result containing an error. Check whether the model finds the relevant passage and recovers from the failed tool call.
What to verify before switching
- Exact Claude family and version, not a product-plan name.
- Messages protocol, tool use and thinking settings.
- Context limits and input/output tariffs.
Sources
- Anthropic announcements
Official source
API access questions
Can I call this model through this API?
Use only a model ID listed in the live catalog. This page's URL is an editorial identifier and is not an API model ID.
When will it be available here?
An integration date has not been announced. Check this page and the product updates; a vendor release date does not set our availability date.
Are these verified samples from the new model?
This page contains an evaluation brief, not generated samples or measured quality claims. Results and supported settings belong on the model page after access is verified.