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Anthropic

Anthropic is an American AI safety company and large language model developer founded in 2021 by former OpenAI researchers, best known for developing the Claude family of AI assistants and the Constitutional AI alignment technique.

7 min readLast updated May 2026Companies & Tools

Anthropic is an American artificial intelligence safety company and large language model developer, incorporated as a Public Benefit Corporation (PBC). The company was founded in 2021 by Dario Amodei (Chief Executive Officer), Daniela Amodei (President), and several colleagues who had previously worked at OpenAI, including Tom Brown, Chris Olah, Sam McCandlish, Jack Clark, and Jared Kaplan. Anthropic's stated mission is the responsible development and maintenance of advanced AI for the long-term benefit of humanity, with AI safety research occupying a central role alongside product development.

The company is best known for the Claude family of AI assistants, deployed through a consumer web interface and an API platform. Anthropic has grown rapidly: in February 2026, it announced a USD 30 billion funding round that valued the company at approximately USD 380 billion, with annualised revenue reported to be growing at approximately 10 times year-over-year.[^1]

Founding and Background

Anthropic was established following the departure of a significant cohort from OpenAI in late 2020 and 2021, amid disagreements over the direction and governance of AI development. Dario Amodei had served as VP of Research at OpenAI. The founding team brought deep expertise in large-scale model training, interpretability research, and alignment theory.

The company received early-stage backing from Spark Capital and subsequently from a broader investor group. Amazon Web Services announced a multi-year investment of up to USD 4 billion in Anthropic in 2023, making it the largest external investor and establishing a strategic partnership under which Claude models are available through Amazon Bedrock. In October 2025, Anthropic announced access to up to one million of Google's Tensor Processing Units (TPUs), providing substantial additional compute capacity.[^2]

Claude Models

Claude is Anthropic's primary product and the external manifestation of its research agenda. The model family has evolved through multiple generations.

The first version of Claude was completed in 2022 but not publicly released at that time, with Anthropic citing the need for additional safety evaluation. Claude was launched in March 2023, available to early API customers.

Claude 3 (March 2024) introduced a three-tier capability structure: Opus (highest capability), Sonnet (balanced performance and efficiency), and Haiku (fastest and most compact). Claude 3 Opus demonstrated performance competitive with GPT-4 on standard benchmarks at the time of release.

Claude 4 was announced in May 2025, introducing further capability advances alongside the Model Context Protocol (MCP), an open standard enabling Claude to connect with external tools, databases, and services. By February 2026, the Claude Opus 4.6 and Sonnet 4.6 variants had been released.[^1]

Claude models are deployed through Claude.ai (a web and mobile interface), the Anthropic API, and through third-party cloud platforms including Amazon Bedrock, Google Cloud Vertex AI, and integrations within products such as Slack (Claude for Teams), Notion, and enterprise software ecosystems.

Constitutional AI and Alignment Research

Anthropic's most distinctive technical contribution to the AI safety field is Constitutional AI (CAI), introduced in a 2022 paper.[^3] Constitutional AI is a training methodology designed to produce AI models that are helpful, harmless, and honest without relying entirely on human feedback for every safety-related judgement.

The technique operates in two phases. In the first phase, a model critiques and revises its own outputs according to a set of principles (the "constitution") covering harmlessness, honesty, and avoidance of harmful content. In the second phase, reinforcement learning from AI feedback (RLAIF) is used: a second AI model evaluates competing responses according to constitutional principles and generates preference data used for fine-tuning. This approach reduces dependence on large volumes of human labellers for safety feedback and allows the model's values to be specified and audited through the constitution document rather than inferred from human labelling patterns alone.

Anthropic also conducts foundational research in mechanistic interpretability — the attempt to reverse-engineer the computations performed inside neural networks at the level of individual neurons, circuits, and attention heads. The goal is to eventually make it possible to verify that a model's internal reasoning is aligned with its stated behaviour, rather than relying solely on behavioural evaluation.

Safety Research and Policy

Anthropic publishes an annual Responsible Scaling Policy (RSP) that commits the company to specific safety evaluations before deploying models above defined capability thresholds. The policy establishes AI Safety Level (ASL) tiers: current models are evaluated against criteria for ASL-2 and ASL-3, with higher levels reserved for models that could pose catastrophic risks.

The company maintains a dedicated policy team and engages with legislative processes in the United States, the United Kingdom, and the European Union. Anthropic's researchers have contributed to public debate on frontier AI risk, model evaluations, and standards for responsible deployment.[^4]

Commercial Position

Anthropic competes directly with OpenAI (GPT model family), Google DeepMind (Gemini family), and Meta AI (Llama open-weight models) in the large language model market. Its differentiation rests on its safety-oriented brand positioning, Constitutional AI research, and enterprise adoption among customers for whom AI governance and auditability are procurement priorities. In December 2025, Anthropic announced a USD 200 million multi-year partnership with Snowflake to distribute Claude through Snowflake's data cloud platform.

See Also

References

References

  1. Taskade. (2026). Anthropic History 2026: Claude AI to $380B Valuation. https://www.taskade.com/blog/anthropic-claude-history
  2. Britannica Money. (2025). Anthropic | History, Controversies, & Claude AI. Encyclopaedia Britannica. https://www.britannica.com/money/Anthropic-PBC
  3. Bai, Y., Jones, A., Ndousse, K., et al. (2022). Constitutional AI: Harmlessness from AI Feedback. arXiv:2212.08073. Anthropic.
  4. Anthropic. (2023). Anthropic's Responsible Scaling Policy. https://www.anthropic.com/responsible-scaling-policy