Anthropic has introduced Claude Tag for Slack, enabling the model to act as a proactive colleague that joins discussions, handles tasks in sequence, posts results in threads, operates in ambient mode and schedules its own reminders. Internally the company now generates 65 percent of its code with the tool while administrators retain token caps to manage spending.
The system independently plans its daily workload and dispatches alerts to the appropriate colleagues while running without constant supervision.
To avoid runaway expenses, workspace admins set a ceiling on the number of tokens Claude may consume before the model begins declining further requests.
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Anthropic is opening a research preview of Claude Duet, a proactive agent app that runs on Opus 5.5 and asks for your approval before sensitive actions. Access starts by waitlist for US Pro and Max subscribers, according to Anthropic.
Anthropic released Claude Haiku 5.5, its cheapest and fastest small model, at $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100,000 tokens. Anthropic says it costs around 75% less to run than Haiku 4.5 on average and scores far higher on its benchmarks.
Anthropic's Claude service is down worldwide due to authentication system failures affecting multiple products. More than 1,500 reports appeared on Downdetector within minutes on September 29.
Anthropic introduced Claude Sonnet 5.5 at unchanged mid-tier rates of $2 per million input tokens and $10 per million output tokens. The model exceeded Opus 5.5 on Terminal-Bench 4.0 yet consumed more tokens at peak effort settings.
Anthropic says early estimates show its new anti-distillation defenses cut the data distillers harvest from Claude by about 90-99%. It has banned tens of thousands of accounts, but says it doesn't know how long the gains will last.
