A post on X by @lyraxana reports that Anthropic is stealth testing a model identified as Claude Opus 5.5 under the reported codename claude-wafer-eap. The post also says a release is planned for Tuesday.

That is the full extent of the supplied report. It does not establish that Anthropic has officially announced Claude Opus 5.5, that the model is publicly available, or that a release will happen on that schedule.

What the post reports about Claude Opus 5.5

The post identifies the reported model as claude-opus-5-5 and describes Anthropic’s testing as “stealth” testing. In this context, that wording suggests testing that has not been publicly documented by Anthropic in the supplied evidence. It does not explain how the model was accessed, how long testing has been underway, or whether the model is being evaluated internally or with a limited group of users.

The post does not provide capabilities, benchmark results, pricing, access terms, supported products, or a comparison with an existing Claude model. Those details remain unknown from the available source.

The reported testing codename

The reported testing identifier is claude-wafer-eap. The post associates that name with the reported testing of claude-opus-5-5, but it does not explain the label’s meaning.

It is therefore not clear whether claude-wafer-eap is a testing label, an early-access identifier, or a name that could appear in a public product. The available evidence does not establish that it will become the final name of any Anthropic model or feature.

What “Tuesday” does—and does not—tell us

The post says the release is planned for Tuesday, but it does not specify which Tuesday or provide an exact calendar date. “Planned” describes an intended schedule rather than a completed release, so the statement should not be treated as confirmation that the model launched or will be generally available on that day.

The source also does not say what a release would involve. It could refer to a public model launch, access for a limited group, an API update, or another form of availability, but the supplied post does not distinguish between those possibilities.

What remains unconfirmed

Based on the supplied source, there is no confirmation of:

  • An official Anthropic announcement of Claude Opus 5.5

  • A specific release date

  • Public availability or limited-access availability

  • The model’s capabilities or benchmark performance

  • Pricing, usage limits, or access requirements

  • Which Claude products or APIs might support it

  • Whether claude-wafer-eap is a testing identifier or a public product name

Sources