Anthropic says Sonnet 5.5 nearly ties Opus 5.5, 1,844 to 1,846, on an everyday-work benchmark while running more than 30% faster than Sonnet 5. For teams paying double per token for Opus, Sonnet becomes the sensible default, with Opus kept for long, ambiguous jobs.
Perspective Coverage
11 publishers
- Builder
- Builder 36%
- Operator
- Operator 43%
- Investor
- Investor 21%
Reality
- Evidence45
- Adoption50
- Hype gap+25
- Incentives65
- Confidence55
Anthropic now watermarks Claude's text with a version of Google DeepMind's SynthID-Text to meet the EU AI Act's transparency rules. Only a holder of the secret key can measure the mark, a lean in token choice that says little until it spans many tokens.
Reality
- Evidence45
- Adoption40
- Hype gap0
- Incentives55
- Confidence45
The Claude watermark survives light editing and dissolves under heavy editing, and its absence proves nothing. Policies that treat it as a verdict are built on a binary that does not exist.
Perspective Coverage
6 publishers
- Builder
- Builder 42%
- Operator
- Operator 45%
- Investor
- Investor 13%
Reality
- Evidence60
- Adoption50
- Hype gap+15
- Incentives50
- Confidence60
Anthropic's Article 50 compliance mark is applied during decoding, so text Claude only edited is flagged too. There is no opt-out, no visibility, and no way to audit coverage.
Perspective Coverage
4 publishers
- Builder
- Builder 38%
- Operator
- Operator 55%
- Investor
- Investor 7%
Reality
- Evidence62
- Adoption60
- Hype gap+25
- Incentives55
- Confidence58
Techdirt argues Anthropic complied with the EU AI Act more broadly than the law required. For anyone shipping model-written text, the vendor's implementation is the constraint that actually binds.
Reality
- Evidence60
- Adoption65
- Hype gap+25
- Incentives50
- Confidence55
Anthropic began marking Claude's output on 2 August. Within days an open-source stripper had more than 14,000 GitHub stars, which settles what the mark can and cannot prove.
Perspective Coverage
3 publishers
- Builder
- Builder 42%
- Operator
- Operator 35%
- Investor
- Investor 23%
Reality
- Evidence74
- Adoption68
- Hype gap+14
- Incentives72
- Confidence71