Try
Useful tools & techniquesAnthropic offers free model scans to open-source maintainers
Anthropic’s opt-in OSS Scanner periodically checks enrolled projects with its strongest models and sends proof-of-concept reports, explanations, and suggested fixes when available, free of charge. Reports are unreviewed by humans; Anthropic expects a true-positive rate above 90% and warns that findings, including severity ratings, may be inaccurate. Its Critical Infrastructure Defense Program pairs Claude with on-site engineers and security partners.
Consider enrolling a project only if maintainers can triage model-generated findings promptly.
Use REA to investigate how apps implement features
REA is a local MCP toolkit that lets agents inspect binaries, JavaScript/Electron apps, .NET assemblies, and websites, then return evidence and limitations. Setup supports Claude Code, Codex, Cursor, Gemini CLI, and others; Node.js and npm are required. Static JavaScript analysis needs no reverse-engineering engine; native analysis can use Hopper, Ghidra, or IDA.
Try `npx rea-agents setup` on an authorized target, then ask your agent to trace a feature.
Claude can build live dashboards and editable animations
Claude Dashboards is in beta on paid plans and connects to data platforms including BigQuery, Databricks, and Snowflake; charts expose their underlying queries and refresh time. Claude Motion, in beta on Team and Enterprise, creates editable, code-based animations. Docs, Slides, and Design are out of beta on all plans, including Free; admins control enterprise access to beta features.
Prototype a dashboard from a connected data source, then inspect its generated query before sharing.
Know
What changedClaude plans may stretch further, but Opus Fast costs extra
SemiAnalysis’s metered tests estimate Claude subscriptions deliver about five times the API-equivalent value of comparable OpenAI plans for mid-tier models; it says OpenAI halved limits on its $200 plan and added a $500 tier. A post reports Opus 5.5 Fast rolled out; another says it bills separately from Claude subscriptions.
Check your plan’s current limits before budgeting agent workloads; don’t assume Fast mode is included.
Anthropic clarifies Claude’s use restrictions November 12
Anthropic’s revised Usage Policy takes effect November 12. It consolidates bans on deceptive campaigns, clarifies restrictions on weapons software, surveillance, and election interference, and adds controls for autonomous physical actions. High-risk health, legal, financial, and similar recommendations still require qualified human review and disclosure that AI was used; sustained, needless cruelty toward Claude is also prohibited.
Review the policy before deploying Claude in regulated, political, surveillance, or physical-action workflows.
OpenAI publishes a large batch of AI-generated math
OpenAI says its internal model produced a broad set of results, publishing manuscripts and many Lean formalizations with revision protocols and some reasoning summaries. A secondary account counts 722 manuscripts across 372 families and says the average used about three hours of ChatGPT Pro compute. Some results remain unverified; three papers were withdrawn after a reported sign error.
Treat these as claims under community review, not verified capabilities for your own workloads.
Samaya reports frontier models beating earnings consensus
In Samaya’s harness, models predicted four earnings metrics one week ahead for 456 large companies using point-in-time financial data. Samaya reports its newest models beat even a bias-corrected analyst baseline; its ablation found quarter-start data improved performance by 25 percentage points, with full timely data doing better. The company offers the prediction agent in alpha.
The result highlights retrieval and timely data as key to evaluated reasoning; treat the vendor’s benchmark as preliminary.