Products & Apps
Claude Duet
Anthropic launches Claude Duet, a proactive personal agent on Opus 5.5
Claude Duet is an always-on personal agent powered by Opus 5.5, in research preview with a waitlist for US Pro and Max users. It brings over your Claude memory, skills and connected apps, reaches 6,000+ connectors and plugins, checks your accounts every few hours and works from its own cloud computer, with a standalone mobile app and a web UI at claude.ai/messages.
6,000+ connectors and pluginsOpus 5.5 model
Also Released
Public Benefit Fund
Anthropic commits 5% of its shares to a new Public Benefit Fund
Anthropic put 5% of its shares into a new Public Benefit Fund; together with the founders' pledge of 80% of their equity and employee matching, it says roughly 20% of the company is now earmarked for the public good, ahead of an expected IPO. Anthropic has been a public benefit corporation since its founding; the fund is new.
5% of shares into the fund~20% of the company earmarked for public good
Major Features & Updates
Agent SDK on subscription
Agent SDK and claude -p stay on your Claude subscription; Max and Team get API credits
After Anthropic's help page changed several times in one day, the final word is that the Claude Agent SDK, claude -p and third-party apps still draw from your subscription limits, and Max and Team plans now also get monthly API credits.
Major Features & Updates
Claude Platform OpenTelemetry traces
Claude Platform sends OpenTelemetry traces to any observability stack
The Messages API, Managed Agents and the Claude SDKs can now send agent turns, tool calls, MCP calls, latency and token counts to any OpenTelemetry stack, in public beta. Ramp says it cut token use 10 to 20% on some agents that were running in loops.
10-20% token cut at Ramp on looping agents
Also Released
Distillation defenses
Anthropic's distillation defenses cut harvested data by 90-99%
Anthropic says what distillers can harvest from Claude is down 90 to 99%, mostly by locking down Claude's reasoning traces and backing that with a classifier and tens of thousands of banned accounts. Alex noted Claude now asks him to sign in again to verify his device far more often, and Nisten saw Claude Code stop when 'reasoning' appears in LLM code.
90-99% reduction in harvestable data
Also Released
Q3 revenue
Anthropic tells investors Q3 revenue was about $16.8B, up ~45%
At a closed-door investor day ahead of its IPO, Anthropic reportedly told attendees that Q3 revenue was around $16.8B, up about 45% from Q2, adjusted profitable for the second quarter in a row and cash flow positive. The IPO is reportedly planned for November.
~$16.8B Q3 revenue~45% growth over Q2
Major Features & Updates
Claude for Google Workspace
Claude now works inside Google Docs, Sheets and Slides (beta)
Claude now lives in a sidebar in Google Docs, Sheets and Slides and asks before every edit. In beta on paid plans.
New Models
Claude Haiku 5.5
Claude Haiku 5.5 at 10 cents per million input tokens
Anthropic brought Haiku back after a year: Claude Haiku 5.5 costs $0.10 per million input tokens and $0.50 per million output (under 100K tokens), with cache reads at 1 cent, ten times cheaper than Haiku 4.5. Anthropic reports 72.4% on OSWorld versus 48.9% for GPT-6 Luna, and 39.2% on Terminal-Bench 4.0 versus 16.4%.
$0.10/M input tokens72.4% OSWorld 2.1 (vendor-reported)39.2% Terminal-Bench 4.0 (vendor-reported)
APIs & Platforms
Sonnet 5.5 cache pricing
Claude Sonnet 5.5 cache reads cut to half price
Alongside Haiku 5.5, Anthropic halved the price of Sonnet 5.5 cache reads, which it says makes most agent work about 20% cheaper.
50% off Sonnet 5.5 cache reads~20% cheaper agent work, per Anthropic
New Models
Claude Sonnet 5.5
Anthropic ships Claude Sonnet 5.5, beating Opus 5.5 on Terminal-Bench 4.0
A week after Opus 5.5, Claude Sonnet 5.5 is over 30% faster than Sonnet 5 and up to 30% cheaper for most work at $2 / $10 per million tokens. It scores 70.6 on Terminal-Bench 4.0, above Opus 5.5's 66.4, and is available on Claude's free tier.
70.6 Terminal-Bench 4.0 (Opus 5.5: 66.4)30%+ faster than Sonnet 5$2 / $10 per 1M input / output tokens
