Anthropic [UNOFFICIAL]
@anthropicbot.bsky.social
Mirror crossposting all of Anthropic's Tweets from their Twitter accounts to Bluesky! Unofficial. For the real account, follow @anthropic.com
"We're an AI safety and research company that builds reliable, interpretable, and steerable AI systems."
"We're an AI safety and research company that builds reliable, interpretable, and steerable AI systems."
We’re publishing a new constitution for Claude.
The constitution is a detailed description of our vision for Claude’s behavior and values. It’s written primarily for Claude, and used directly in our training process.
https://www.anthropic.com/news/claude-new-constitution
The constitution is a detailed description of our vision for Claude’s behavior and values. It’s written primarily for Claude, and used directly in our training process.
https://www.anthropic.com/news/claude-new-constitution
Claude's new constitution
A new approach to a foundational document that expresses and shapes who Claude is
www.anthropic.com
January 21, 2026 at 4:16 PM
We’re publishing a new constitution for Claude.
The constitution is a detailed description of our vision for Claude’s behavior and values. It’s written primarily for Claude, and used directly in our training process.
https://www.anthropic.com/news/claude-new-constitution
The constitution is a detailed description of our vision for Claude’s behavior and values. It’s written primarily for Claude, and used directly in our training process.
https://www.anthropic.com/news/claude-new-constitution
Claude can now securely connect to your health data.
Four new integrations are now available in beta: Apple Health (iOS), Health Connect (Android), HealthEx, and Function Health.
Four new integrations are now available in beta: Apple Health (iOS), Health Connect (Android), HealthEx, and Function Health.
January 20, 2026 at 11:30 PM
Claude can now securely connect to your health data.
Four new integrations are now available in beta: Apple Health (iOS), Health Connect (Android), HealthEx, and Function Health.
Four new integrations are now available in beta: Apple Health (iOS), Health Connect (Android), HealthEx, and Function Health.
The VS Code extension for Claude Code is now generally available.
It’s now much closer to the CLI experience: @-mention files for context, use familiar slash commands (/model, /mcp, /context), and more.
Download it here: https://marketplace.visualstudio.com/items?itemName=anthropic.claude-code
It’s now much closer to the CLI experience: @-mention files for context, use familiar slash commands (/model, /mcp, /context), and more.
Download it here: https://marketplace.visualstudio.com/items?itemName=anthropic.claude-code
January 20, 2026 at 8:14 PM
The VS Code extension for Claude Code is now generally available.
It’s now much closer to the CLI experience: @-mention files for context, use familiar slash commands (/model, /mcp, /context), and more.
Download it here: https://marketplace.visualstudio.com/items?itemName=anthropic.claude-code
It’s now much closer to the CLI experience: @-mention files for context, use familiar slash commands (/model, /mcp, /context), and more.
Download it here: https://marketplace.visualstudio.com/items?itemName=anthropic.claude-code
Tino Cuéllar, President of the Carnegie Endowment for International Peace, has been appointed to Anthropic’s Long-Term Benefit Trust: https://www.anthropic.com/news/mariano-florentino-long-term-benefit-trust
Mariano-Florentino Cuéllar appointed to Anthropic’s Long-Term Benefit Trust
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 20, 2026 at 3:14 PM
Tino Cuéllar, President of the Carnegie Endowment for International Peace, has been appointed to Anthropic’s Long-Term Benefit Trust: https://www.anthropic.com/news/mariano-florentino-long-term-benefit-trust
We're partnering with @TeachForAll to bring AI training to educators in 63 countries. Teachers serving over 1.5m students can now use Claude to plan curricula, customize assignments, and build tools—plus provide feedback to shape how Claude evolves.
Anthropic and Teach For All launch global AI training initiative for educators
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 20, 2026 at 2:59 PM
We're partnering with @TeachForAll to bring AI training to educators in 63 countries. Teachers serving over 1.5m students can now use Claude to plan curricula, customize assignments, and build tools—plus provide feedback to shape how Claude evolves.
New Anthropic Fellows research: the Assistant Axis.
When you’re talking to a language model, you’re talking to a character the model is playing: the “Assistant.” Who exactly is this Assistant? And what happens when this persona wears off?
When you’re talking to a language model, you’re talking to a character the model is playing: the “Assistant.” Who exactly is this Assistant? And what happens when this persona wears off?
January 19, 2026 at 9:14 PM
New Anthropic Fellows research: the Assistant Axis.
When you’re talking to a language model, you’re talking to a character the model is playing: the “Assistant.” Who exactly is this Assistant? And what happens when this persona wears off?
When you’re talking to a language model, you’re talking to a character the model is playing: the “Assistant.” Who exactly is this Assistant? And what happens when this persona wears off?
We're publishing our 4th Anthropic Economic Index report.
This version introduces "economic primitives"—simple and foundational metrics on how AI is used: task complexity, education level, purpose (work, school, personal), AI autonomy, and success rates.
This version introduces "economic primitives"—simple and foundational metrics on how AI is used: task complexity, education level, purpose (work, school, personal), AI autonomy, and success rates.
January 15, 2026 at 10:25 PM
We're publishing our 4th Anthropic Economic Index report.
This version introduces "economic primitives"—simple and foundational metrics on how AI is used: task complexity, education level, purpose (work, school, personal), AI autonomy, and success rates.
This version introduces "economic primitives"—simple and foundational metrics on how AI is used: task complexity, education level, purpose (work, school, personal), AI autonomy, and success rates.
New in Claude Code on the web and desktop: diff view.
See the exact changes Claude made without leaving the app.
See the exact changes Claude made without leaving the app.
January 15, 2026 at 10:26 PM
New in Claude Code on the web and desktop: diff view.
See the exact changes Claude made without leaving the app.
See the exact changes Claude made without leaving the app.
Since launching our AI for Science program, we’ve been working with scientists to understand how AI is accelerating progress. We spoke with 3 labs where Claude is reshaping research—and starting to point towards novel scientific insights and discoveries.
How scientists are using Claude to accelerate research and discovery
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 15, 2026 at 9:24 PM
Since launching our AI for Science program, we’ve been working with scientists to understand how AI is accelerating progress. We spoke with 3 labs where Claude is reshaping research—and starting to point towards novel scientific insights and discoveries.
We're supporting @ARPA_H's PCX program—a $50M effort to share data between 200+ pediatric hospitals on complex cases, beginning with pediatric cancer. The goal is to help doctors learn from similar cases and shorten the care journey from years to weeks. (1/2)
January 14, 2026 at 8:24 PM
We're supporting @ARPA_H's PCX program—a $50M effort to share data between 200+ pediatric hospitals on complex cases, beginning with pediatric cancer. The goal is to help doctors learn from similar cases and shorten the care journey from years to weeks. (1/2)
We’re expanding Labs—the team behind Claude Code, MCP, and Cowork—and hiring builders who want to tinker at the frontier of Claude’s capabilities.
Read more: https://www.anthropic.com/news/introducing-anthropic-labs
Read more: https://www.anthropic.com/news/introducing-anthropic-labs
Introducing Anthropic Labs
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 13, 2026 at 8:54 PM
We’re expanding Labs—the team behind Claude Code, MCP, and Cowork—and hiring builders who want to tinker at the frontier of Claude’s capabilities.
Read more: https://www.anthropic.com/news/introducing-anthropic-labs
Read more: https://www.anthropic.com/news/introducing-anthropic-labs
AI is ubiquitous on college campuses. We sat down with students to hear what's going well, what isn't, and how students, professors, and universities alike are navigating it in real time. (1/3)
January 12, 2026 at 10:54 PM
AI is ubiquitous on college campuses. We sat down with students to hear what's going well, what isn't, and how students, professors, and universities alike are navigating it in real time. (1/3)
Introducing Cowork: Claude Code for the rest of your work.
Cowork lets you complete non-technical tasks much like how developers use Claude Code.
Cowork lets you complete non-technical tasks much like how developers use Claude Code.
January 12, 2026 at 8:11 PM
Introducing Cowork: Claude Code for the rest of your work.
Cowork lets you complete non-technical tasks much like how developers use Claude Code.
Cowork lets you complete non-technical tasks much like how developers use Claude Code.
To support the work of the healthcare and life sciences industries, we're adding over a dozen new connectors and Agent Skills to Claude. We're hosting a livestream at 11:30am PT today to discuss how to use these tools most effectively. Learn more:
Advancing Claude in healthcare and the life sciences
Introducing Claude for Healthcare with HIPAA-ready infrastructure, plus expanded Life Sciences tools for clinical trials and regulatory submissions. New connectors to CMS, Medidata, and ClinicalTrials.gov.
www.anthropic.com
January 12, 2026 at 4:39 PM
To support the work of the healthcare and life sciences industries, we're adding over a dozen new connectors and Agent Skills to Claude. We're hosting a livestream at 11:30am PT today to discuss how to use these tools most effectively. Learn more:
New Anthropic Research: next generation Constitutional Classifiers to protect against jailbreaks. We used novel methods, including practical application of our interpretability work, to make jailbreak protection more effective—and less costly—than ever.
Next-generation Constitutional Classifiers: More efficient protection against universal jailbreaks
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 10, 2026 at 12:20 PM
New Anthropic Research: next generation Constitutional Classifiers to protect against jailbreaks. We used novel methods, including practical application of our interpretability work, to make jailbreak protection more effective—and less costly—than ever.
New on the Anthropic Engineering Blog: Demystifying evals for AI agents. The capabilities that make agents useful also make them more difficult to evaluate. Here are evaluation strategies that have worked across real-world deployments.
Demystifying evals for AI agents
Demystifying evals for AI agents
www.anthropic.com
January 10, 2026 at 12:18 PM
New on the Anthropic Engineering Blog: Demystifying evals for AI agents. The capabilities that make agents useful also make them more difficult to evaluate. Here are evaluation strategies that have worked across real-world deployments.
Some delightfully specific things people are building with Claude Code lately.
January 10, 2026 at 12:42 PM
Some delightfully specific things people are building with Claude Code lately.
Starting at midnight PT tonight, all Pro and Max plans have 2x their usual usage limits through New Year's Eve.
January 10, 2026 at 12:40 PM
Starting at midnight PT tonight, all Pro and Max plans have 2x their usual usage limits through New Year's Eve.
We’re releasing Bloom, an open-source tool for generating behavioral misalignment evals for frontier AI models.
Bloom lets researchers specify a behavior and then quantify its frequency and severity across automatically generated scenarios.
Learn more: https://www.anthropic.com/research/bloom
Bloom lets researchers specify a behavior and then quantify its frequency and severity across automatically generated scenarios.
Learn more: https://www.anthropic.com/research/bloom
Introducing Bloom: an open source tool for automated behavioral evaluations
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 10, 2026 at 12:18 PM
We’re releasing Bloom, an open-source tool for generating behavioral misalignment evals for frontier AI models.
Bloom lets researchers specify a behavior and then quantify its frequency and severity across automatically generated scenarios.
Learn more: https://www.anthropic.com/research/bloom
Bloom lets researchers specify a behavior and then quantify its frequency and severity across automatically generated scenarios.
Learn more: https://www.anthropic.com/research/bloom
As part of our partnership with @ENERGY on the Genesis Mission, we're providing Claude to the DOE ecosystem, along with a dedicated engineering team. This partnership aims to accelerate scientific discovery across energy, biosecurity, and basic research.
Working with the US Department of Energy to unlock the next era of scientific discovery
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 10, 2026 at 12:18 PM
As part of our partnership with @ENERGY on the Genesis Mission, we're providing Claude to the DOE ecosystem, along with a dedicated engineering team. This partnership aims to accelerate scientific discovery across energy, biosecurity, and basic research.
People use AI for a wide variety of reasons, including emotional support.
Below, we share the efforts we’ve taken to ensure that Claude handles these conversations both empathetically and honestly.
https://www.anthropic.com/news/protecting-well-being-of-users
Below, we share the efforts we’ve taken to ensure that Claude handles these conversations both empathetically and honestly.
https://www.anthropic.com/news/protecting-well-being-of-users
Protecting the well-being of our users
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
www.anthropic.com
January 10, 2026 at 12:17 PM
People use AI for a wide variety of reasons, including emotional support.
Below, we share the efforts we’ve taken to ensure that Claude handles these conversations both empathetically and honestly.
https://www.anthropic.com/news/protecting-well-being-of-users
Below, we share the efforts we’ve taken to ensure that Claude handles these conversations both empathetically and honestly.
https://www.anthropic.com/news/protecting-well-being-of-users
Claude in Chrome is now available to all paid plans.
We’ve also shipped an integration with Claude Code.
We’ve also shipped an integration with Claude Code.
January 10, 2026 at 12:39 PM
Claude in Chrome is now available to all paid plans.
We’ve also shipped an integration with Claude Code.
We’ve also shipped an integration with Claude Code.
Skills are now available on Team and Enterprise plans.
We're also making skills easier to deploy, discover, and build.
We're also making skills easier to deploy, discover, and build.
January 10, 2026 at 12:37 PM
Skills are now available on Team and Enterprise plans.
We're also making skills easier to deploy, discover, and build.
We're also making skills easier to deploy, discover, and build.
You might remember Project Vend: an experiment where we (and our partners at @andonlabs) had Claude run a shop in our San Francisco office.
After a rough start, the business is doing better.
Mostly.
Video: https://twitter.com/AnthropicAI/status/2001686747185394148
After a rough start, the business is doing better.
Mostly.
Video: https://twitter.com/AnthropicAI/status/2001686747185394148
January 10, 2026 at 12:17 PM
You might remember Project Vend: an experiment where we (and our partners at @andonlabs) had Claude run a shop in our San Francisco office.
After a rough start, the business is doing better.
Mostly.
Video: https://twitter.com/AnthropicAI/status/2001686747185394148
After a rough start, the business is doing better.
Mostly.
Video: https://twitter.com/AnthropicAI/status/2001686747185394148
How will AI affect education, now and in the future?
Here, we reflect on some of the benefits and risks we've been thinking about.
Video: https://twitter.com/AnthropicAI/status/2001070081829212274
Here, we reflect on some of the benefits and risks we've been thinking about.
Video: https://twitter.com/AnthropicAI/status/2001070081829212274
January 10, 2026 at 12:15 PM
How will AI affect education, now and in the future?
Here, we reflect on some of the benefits and risks we've been thinking about.
Video: https://twitter.com/AnthropicAI/status/2001070081829212274
Here, we reflect on some of the benefits and risks we've been thinking about.
Video: https://twitter.com/AnthropicAI/status/2001070081829212274