Resolution criteria

This market resolves to YES if Anthropic releases an official version or model named "Claude Sonnet 4.8" to the public, or makes it generally available via the Anthropic API, at or before 23:59:59 UTC on May 23, 2026.

This market resolves to NO if no version or model named "Claude Sonnet 4.8" is released or made generally available by the specified time.

Resolution will be based on official announcements from Anthropic via their official website (anthropic.com), official X (formerly Twitter) account (@AnthropicAI), or technical documentation release notes.