---
title: "Anthropic"
description: "AI safety and research company that's working to build reliable, interpretable, and steerable AI systems."
---

# Anthropic
> AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.

## Articles

### [Improving Fable 5 Safeguards](https://yomu.fyi/post/improving-fable-5-safeguards.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Aug 24, 2026
- Type: Announcement

Claude Fable 5’s biology safeguards have been updated to reduce false positives that reroute biology-related requests to Opus 5. In testing, the change reduced biology-related fallbacks by about 85% across product surfaces, expanding support for everyday health and educational questions and some clinical tasks. The update followed a rewrite of the classifier’s constitution, feedback from internal and external experts, new training data, and retraining, with verification that harmful and dual-use biology content would still trigger it. Fable 5 still blocks dual-use professional biology and drug-development queries, including virology, toxicology, and molecular design, while trusted access pathways are being developed for frontier research.


### [Introducing Claude Sonnet 5](https://yomu.fyi/post/introducing-claude-sonnet-5.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Aug 10, 2026
- Type: Announcement

Claude Sonnet 5 is introduced as an agentic Sonnet model that plans, uses browser and terminal tools, and operates autonomously. The post says it approaches Opus 4.8 performance at lower prices while improving on Sonnet 4.6 in reasoning, tool use, coding, and knowledge work. Comparisons on BrowseComp and OSWorld-Verified across effort levels show a wider cost-performance range, with higher-effort results matching Opus 4.8 on some tasks. Safety assessments found lower overall undesirable behavior, hallucination, and sycophancy rates than Sonnet 4.6, while default cyber safeguards address dangerous usage; the model is available across all plans and via the Claude API for $2 per million input tokens and $10 per million output tokens.


### [Tino Cuellar joins Anthropic as Chief Global Affairs Officer](https://yomu.fyi/post/tino-cuellar-joins-anthropic-as-chief-global-affairs-officer.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Aug 4, 2026
- Type: Announcement

Mariano-Florentino (Tino) Cuéllar will join Anthropic as its first Chief Global Affairs Officer, leading policy, strategic international engagement, and government relationships worldwide. He brings experience spanning law, technology, international security, and public institutions, including the presidency of Carnegie Endowment, a California Supreme Court justice role, Stanford leadership, and service on federal advisory boards. Cuéllar has also co-led California’s Frontier AI Working Group and organized artificial intelligence classes at Stanford Law School nearly a decade ago. He stepped down as a Trustee of Anthropic’s Long-Term Benefit Trust, a position he held since January 2026, to join the company; Anthropic says he will help engage governments, civil society, and communities on AI’s risks, opportunities, and democratic governance.


### [Introducing Claude for Nonprofits](https://yomu.fyi/post/introducing-claude-for-nonprofits.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Aug 3, 2026
- Type: Announcement

Claude for Nonprofits launches with GivingTuesday to help nonprofit organizations address limited resources while fitting AI into existing workflows and meeting community privacy expectations. The program offers discounts of up to 75% on Team and Enterprise plans, including Claude Opus 4.6, Sonnet 4.5, and Haiku 4.5, with plan capabilities and intended organization sizes described in the announcement. It also adds open-source connectors for Benevity, Blackbaud, and Candid, linking Claude to nonprofit and fundraising data and searches. A free, no-background course, AI Fluency for Nonprofits, offers instruction on grant writing, program evaluation, donor engagement, and efficiency. Pilot partnerships with more than 60 grantee organizations and customer examples are being used to learn how nonprofits can apply Claude to impact analysis, fundraising, documentation, and operational work.


### [Our position on open-weights models](https://yomu.fyi/post/our-position-on-open-weights-models.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 28, 2026
- Type: Explainer

Anthropic CEO Dario Amodei states that Anthropic has never advocated banning open-weights models, while distinguishing models without dangerous capabilities as a public good from risks associated with sufficiently capable systems. The post identifies two concerns: authoritarian governments gaining military superiority or enabling repression, and powerful models being misused for cyberattacks, biological attacks, or serious alignment problems. It argues open weights can increase misuse risk because guardrails and monitoring are difficult after release, but says banning their use by US businesses would not address bad actors. Instead, Amodei supports restricting powerful chips and chipmaking equipment exports to China, disrupting industrial-scale distillation, and requiring global pre-release safety testing for sufficiently capable open and closed models. He agrees open weights can expand access, competition, and customer control, but says claims about safeguards should be tested empirically.


### [Expanding our partnership with Cognizant | Anthropic](https://yomu.fyi/post/expanding-our-partnership-with-cognizant-anthropic.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 27, 2026
- Type: Announcement

Anthropic is expanding its partnership with Cognizant, a technology services company, to deploy Claude more broadly across enterprise work. Cognizant is embedding Claude in its business and engineering platforms, scaling a Claude-certified workforce through its Frontier Certified model, and becoming a Global Premier Partner in the Claude Partner Network. Its Flowsource platform runs Claude Code alongside engineers in a Spec-Driven Development module, directing outputs with project specifications, coding standards, and architectural blueprints before evaluating them for production. The company reports more than 30,000 associates have completed Claude training and describes client deployments including a contract-intelligence system that cut review time by up to 40% and raised extraction accuracy above 88%, plus a risk-navigation tool that saves underwriters roughly eight hours a week. The collaboration combines Cognizant’s industry context, engineering scale, and delivery capabilities with Claude for production enterprise use.


### [Introducing Claude Opus 5](https://yomu.fyi/post/introducing-claude-opus-5.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 25, 2026
- Type: Announcement

Claude Opus 5 is available as a new model positioned near the frontier intelligence of Claude Fable 5, at half its price, while remaining behind Mythos 5 on cybersecurity tasks. Reported results show state-of-the-art performance on coding and knowledge-work evaluations, including Frontier-Bench, alongside strong results on ARC-AGI 3, Zapier AutomationBench, and OSWorld 2.0. The model uses configurable effort settings to trade intelligence for token use, speed, and cost, and is described as stronger at verifying work, iterating, and handling long agentic tasks. It costs $5 per million input tokens and $25 per million output tokens, with Fast mode running about 2.5 times faster at twice the base price. Safeguards allow vulnerability finding while blocking binary-based scanning, penetration testing, and exploit generation, with flagged requests able to fall back to Opus 4.8.


### [Introducing Claude Opus 4.7](https://yomu.fyi/post/introducing-claude-opus-4-7.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 23, 2026
- Type: Announcement

Claude Opus 4.7 is generally available as an upgrade to Opus 4.6, with stated gains in advanced software engineering, difficult long-running tasks, instruction following, self-verification, and higher-resolution vision. The announcement reports benchmark and tester results including a 13% resolution increase on a 93-task coding benchmark, a 0.715 tie for top score across six research-agent modules, and 90.9% on BigLaw Bench at high effort. It also describes safeguards that detect and block prohibited or high-risk cybersecurity requests, while legitimate security professionals can apply to the Cyber Verification Program. The model is offered across Claude products, its API, Amazon Bedrock, Vertex AI, and Microsoft Foundry at $5 per million input tokens and $25 per million output tokens. New controls include xhigh effort, task budgets, Claude Code’s /ultrareview, and auto mode, while migration may increase token counts because of tokenizer and reasoning changes.


### [Introducing Claude Opus 4.5](https://yomu.fyi/post/introducing-claude-opus-4-5.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 23, 2026
- Type: Announcement

Claude Opus 4.5 is available today across Claude apps, the API, and all three major cloud platforms, with the model identifier claude-opus-4-5-20251101 and pricing of $5/$25 per million tokens. The announcement positions it as a state-of-the-art model for coding, agents, computer use, deep research, spreadsheets, and slides, while reporting stronger vision, reasoning, and mathematics than predecessors. On the Claude API, an effort parameter lets developers trade off speed and spend against capability; at medium effort, Opus 4.5 matched Sonnet 4.5’s best SWE-bench Verified score using 76% fewer output tokens, while highest effort exceeded it by 4.3 percentage points using 48% fewer tokens. Additional platform changes include context compaction, advanced tool use, memory, and improved multi-agent coordination. Product updates add Claude Code’s editable Plan Mode and desktop sessions, automatic conversation summarization, and expanded Claude for Chrome and Excel access.


### [Donating another $20 million to Public First Action](https://yomu.fyi/post/donating-another-20-million-to-public-first-action.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 22, 2026
- Type: Announcement

The announcement says an additional $20 million contribution to Public First Action brings total support to $40 million. Public First Action is described as nonpartisan, educating the public about AI and working across party lines on safeguards; the donations are restricted to public education and policy and cannot influence elections. It cites rapidly improving models, including Claude Mythos Preview’s discovery of thousands of high-severity vulnerabilities, and says the model was released to a limited set of cyber defenders through Project Glasswing. The policy agenda calls for verifiable safety claims, civil penalties, deployment controls for catastrophic risks, independent evaluation, security programs, and tighter controls on advanced chips and illicit model access.


### [Introducing Claude Opus 4.8](https://yomu.fyi/post/introducing-claude-opus-4-8.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 22, 2026
- Type: Announcement

Anthropic introduces Claude Opus 4.8, an upgrade over Opus 4.7 for coding, agentic skills, reasoning, and practical knowledge work, with regular pricing unchanged. The release adds adjustable effort in claude.ai and Cowork, dynamic workflows in Claude Code, fast mode at 2.5× speed, and support for system entries inside the Messages API messages array. Dynamic workflows can plan work, run hundreds of parallel subagents in one session, and verify outputs; the post cites codebase-scale migrations across hundreds of thousands of lines as an example. Early evaluations and tester reports describe stronger reliability, judgment, tool efficiency, computer use, and analysis, including an approximately fourfold reduction in allowing flaws in generated code to pass unremarked.


### [Introducing Claude Sonnet 4.5](https://yomu.fyi/post/introducing-claude-sonnet-4-5.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 22, 2026
- Type: Announcement

The release introduces Claude Sonnet 4.5 as a model aimed at complex coding, agentic work, computer use, reasoning, and math, with claimed gains in alignment. It reports state-of-the-art SWE-bench Verified performance and a 61.4% OSWorld score, up from Sonnet 4’s 42.2%, while noting more than 30 hours of observed focus on complex multi-step tasks. Alongside the model, the company released Claude Agent SDK, added Claude Code checkpoints, a refreshed terminal interface, native VS Code extension, context editing, and a memory tool, and brought code execution and file creation to paid Claude apps. Sonnet 4.5 is available through the Claude API as claude-sonnet-4-5 at $3/$15 per million tokens, the same pricing as Sonnet 4. It is released under AI Safety Level 3 protections, with reported reductions in concerning behaviors and improved defenses against prompt injection, while the temporary Imagine with Claude preview is available to Max subscribers for five days.


### [Introducing Claude Haiku 4.5](https://yomu.fyi/post/introducing-claude-haiku-4-5.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 22, 2026
- Type: Announcement

Claude Haiku 4.5, the latest small model, is available to all users, offering a new option for near-frontier performance with lower cost and greater speed. Compared with Claude Sonnet 4, it delivers similar coding performance at one-third the cost and more than twice the speed, while surpassing Sonnet 4 on some computer-use tasks. Priced at $1/$5 per million input and output tokens, the model targets real-time assistants, customer service agents, pair programming, Claude Code workflows, and sub-agent orchestration, where Sonnet 4.5 can plan and delegate parallel subtasks to multiple Haiku 4.5 instances. Safety evaluations found low rates of concerning behavior and greater alignment than Haiku 3.5; the model is released under ASL-2 and is available through Claude apps and Code, the API, Amazon Bedrock, and Google Cloud’s Vertex AI.


### [Introducing Claude Design by Anthropic Labs](https://yomu.fyi/post/introducing-claude-design-by-anthropic-labs.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 22, 2026
- Type: Announcement

Claude Design is introduced as an Anthropic Labs product for collaborating with Claude on visual work including designs, prototypes, slides, and one-pagers. Powered by Claude Opus 4.7, it is in research preview for Pro, Max, Team, and Enterprise subscribers, with gradual rollout and Enterprise access disabled by default. Users can start from prompts, uploaded DOCX, PPTX, or XLSX files, images, codebases, or captured website elements; Claude builds a first version and supports conversational refinement, inline comments, direct edits, custom sliders, and organization-scoped collaboration. During onboarding, it reads a team’s codebase and design files to build reusable design systems, while projects can be exported to Canva, PDF, PPTX, or standalone HTML and handed to Claude Code. Anthropic says teams use it for interactive prototypes, wireframes, explorations, presentations, marketing collateral, and code-powered experiments.


### [Claude Opus 4.6](https://yomu.fyi/post/claude-opus-4-6.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 22, 2026
- Type: Announcement

Claude Opus 4.6 improves on Opus 4.5 with stronger coding, planning, debugging, code review, long-running agentic work, and performance in large codebases. It is the first Opus-class model with a beta 1M-token context window, while API features include adaptive thinking, four effort levels, context compaction, and up to 128k output tokens. In reported evaluations, it achieves the highest score on Terminal-Bench 2.0, leads frontier models on Humanity’s Last Exam and BrowseComp, and exceeds GPT-5.2 by around 144 Elo points and Opus 4.5 by 190 points on GDPval-AA. The release also adds Claude Code agent teams, upgraded Excel capabilities, a PowerPoint research preview, and availability on claude.ai, the API, and major cloud platforms, with base pricing of $5/$25 per million tokens.


### [Introducing Sonnet 4.6](https://yomu.fyi/post/introducing-sonnet-4-6.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 21, 2026
- Type: Announcement

Claude Sonnet 4.6 is introduced as an upgrade across coding, computer use, long-context reasoning, agent planning, knowledge work, and design. It adds a 1M token context window in beta, becomes the default for Free and Pro users in claude.ai and Claude Cowork, and keeps Sonnet 4.5’s starting price of $3/$15 per million tokens. Early testing reports that users preferred it over Sonnet 4.5 in Claude Code roughly 70% of the time and over Opus 4.5 59% of the time. The release also reports gains on OSWorld computer use, prompt-injection resistance, OfficeQA document comprehension, and long-horizon planning, while adding adaptive and extended thinking, beta context compaction, and generally available code execution, memory, programmatic tool calling, tool search, and tool-use examples.


### [Apply for Anthropic’s AI for Science rare disease research grants](https://yomu.fyi/post/apply-for-anthropic-s-ai-for-science-rare-disease-research-grants.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 20, 2026
- Type: Announcement

Anthropic’s AI for Science program is accepting applications for a rare genetic disease research call, offering accepted applicants up to $50,000 in Claude credits over six months across two tracks: basic science and early-stage biotechnology. The basic-science track focuses on collaboration and mechanism discovery, including work with the Monarch Initiative’s Mondo Disease Ontology, Monarch Knowledge Graph, and agent-friendly DisMech library. The biotech track targets faster therapeutic development through regulatory documentation, modality and target analysis, biomarker discovery, and potential basket-trial strategies. Applications are open through August 2, 2026, at 11:59 PM PST, and projects may use Claude Opus or other approved generally available biology models.


### [Introducing Claude Tag](https://yomu.fyi/post/introducing-claude-tag.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 15, 2026
- Type: Announcement

Claude Tag is a Slack-based way for teams to delegate work to Claude by tagging @Claude in shared channels, with access to selected tools, data, and codebases. Claude breaks requests into stages, uses permitted tools, replies in threads, retains relevant channel context, and can pursue scheduled tasks asynchronously; ambient behavior can also surface information and follow up on unresolved work. Administrators scope Claude identities, memories, tools, and information by channel, set organization- and channel-level token-spend limits, and review activity logs, while users can also message Claude privately. Available in beta to Claude Enterprise and Team customers, Claude Tag replaces the existing Claude in Slack app, works with Opus 4.8, and is credited with creating 65% of the product team’s code through Anthropic’s internal version.


### [Agents for financial services](https://yomu.fyi/post/agents-for-financial-services.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 15, 2026
- Type: Announcement

Anthropic is releasing ten ready-to-run agent templates for financial services, targeting work such as pitchbook creation, KYC screening, and month-end close operations. Each template packages task-specific skills, governed data connectors, and subagents, and is available as a plugin for Claude Cowork or Claude Code, or as a cookbook for Claude Managed Agents. Claude add-ins for Excel, PowerPoint, Word, and, soon, Outlook carry context between applications, while new connectors and a Moody’s MCP app provide access to market, research, credit, and company data. The announcement says the updates pair best with Claude Opus 4.7, which leads Vals AI’s Finance Agent benchmark at 64.37%, and states that templates are available today through the financial services marketplace.


### [Anthropic commits $10 million to Canadian AI research](https://yomu.fyi/post/anthropic-commits-10-million-to-canadian-ai-research.md)
- Company: [Anthropic](https://yomu.fyi/company/anthropic.md)
- Published: Jul 15, 2026
- Type: Announcement

Anthropic is committing $10 million CAD to Canadian research institutions to support beneficial and responsible AI applications, building on Canada’s contributions to neural networks, deep learning, and reinforcement learning. The announcement names partnerships with Amii, Mila, Vector, CHEO, CAMH, Université Laval, University of Toronto, and the University of Saskatchewan, with Claude credits supporting work spanning trust and safety, health, scientific discovery, mental health, robotics, sustainability, and public services. Amii, Mila, and Vector will also join Anthropic’s for Startups program, providing affiliated Canadian startups with at least $5,000 USD each in API credits. A Canadian country brief based on the March 2026 Anthropic Economic Index reports that Canada ranks eighth in Claude.ai use, accounts for 2.6% of global consumer use, and ranks second by per-capita adoption; usage is highest in British Columbia and closely follows professional, scientific, and technical employment.


[Newer posts](https://yomu.fyi/company/anthropic/page/6.md) · [Older posts](https://yomu.fyi/company/anthropic/page/8.md)