Anthropic releases Sonnet 5.5, saying it generates outputs 30%+ faster than Sonnet 5 and costs up to 30% less per task, and plans to release Haiku 5.5 soon (Anthropic)
ThinkingNews Desk · how this was written
Anthropic has released Sonnet 5.5, a model that runs more than 30% faster and costs up to 30% less per task than its predecessor. The new version includes cyber safeguards and classifiers that block reasoning extraction. It scores 70.6% on Terminal-Bench 4.0, improving on Sonnet 5.
Written from all 3 reports below, not from any single one.
How it was reported
- TechCrunch·Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner
- TechMeme·Anthropic releases Sonnet 5.5, saying it generates outputs 30%+ faster than Sonnet 5 and costs up to 30% less per task, and plans to release Haiku 5.5 soon (Anthropic)
Anthropic released Sonnet 5.5, delivering 30% faster outputs and up to 30% lower cost per task than Sonnet 5. Meta appointed MongoDB CEO Chirantan Desai to head an Enterprise Platform that bundles its AI tools for clients. Nvidia launched the Open Agent Safety Platform, adding OpenShell for CPUs and Sentry for DPUs, and increased its share-buyback program by $150 B to $235 B.
- The Next Web·Anthropic releases Claude Sonnet 5.5 with the cyber limits it reserved for its best models
Anthropic released Claude Sonnet 5.5, scoring 70.6% on Terminal-Bench 4.0, a 10.3% improvement over Sonnet 5 and surpassing Opus 5.5’s 66.4% at the same effort level. The model runs more than 30% faster, costs up to 30% less per task, and includes frontier-style cyber safeguards and classifiers that block reasoning extraction. Sonnet 5.5 is priced at $2 per million input tokens and $10 per million output tokens.
- TechMeme·Anthropic says GLM-5.3 can autonomously build end-to-end cyber exploits, like Claude Mythos Preview, but was released without robust safeguards against misuse (Anthropic)
President Donald Trump announced a voluntary AI accord, urging tech firms to partner with external auditors and set internal AI alignment controls. OpenAI launched “Dots,” always-on agents powered by GPT-6 Astra, available via ChatGPT, Slack, Microsoft Teams, and a waitlist for iMessage or Android RCS. Trump rejected new federal AI rules, claiming DOJ and FBI oversight suffices, and a 10-person committee has been proposed to oversee the AI industry.
Related stories
- Anthropic's Sonnet 4.6 matches flagship AI performance at one-fifth the cost, accelerating enterprise adoption3 outlets
- Anthropic launches Opus 53 outlets
- Anthropic says Opus 5.5 matches Fable 5.1 "on most tasks" while costing about 40% less to run than Opus 5; Opus 5.5 costs $4/1M input and $20/1M output tokens (Matthias Bastian/The Decoder)3 outlets
- Anthropic's Claude Opus 4.6 brings 1M token context and 'agent teams' to take on OpenAI's Codex7 outlets