Resolution criteria
Anthropic officially launched Claude Opus 4.6 on February 5, 2026, confirming that Opus 4.6 was released as a distinct model. Claude Sonnet 5 was rumored to be released the same week but has not yet appeared as of the creation of this question. The market resolves YES if Anthropic's official statements, documentation or a reliable source with substantial proof confirm that Sonnet 5 was not released because it was renamed to Opus 4.6. The market resolves NO if Sonnet 5 is released within a month (before March 5th 2026) or if credible evidence becomes available that it never existed in the first place. This question will resolve n/a if no substantial evidence appears within 30 days.
This description was partially generated by AI.
1,000🏅 Top traders
| # | Trader | Total profit |
|---|---|---|
| 1 | Ṁ75 | |
| 2 | Ṁ4 | |
| 3 | Ṁ3 | |
| 4 | Ṁ1 | |
| 5 | Ṁ0 |
https://x.com/claudeai/status/2023817132581208353
Anthropic just released Sonnet 4.6. I deem this credible evidence that for the purposes of this question, Sonnet 5 never existed and Opus 4.6 is not, in fact, a rebranded Sonnet 5.