Anthropic

ReleaseClaude adds a Personal Finance tool

On 5 November 2026 Anthropic launched Personal Finance for Claude, a read-only tool that connects bank and credit card accounts through Plaid so users can ask questions about their money in everyday language, with no ads or sponsored recommendations.

PolicyAnthropic says it may be close to recursive self-improvement

In a revised S-1/A, Anthropic added risk factors on recursive self-improvement, saying internal expectations suggest it may soon meet its policy threshold for dramatically accelerated AI-driven progress, while no current model has been designated as exceeding it.

MilestoneAnthropic files publicly for an IPO

On 26 October 2026 Anthropic filed an S-1 registration statement with the US SEC for a proposed IPO, intending to list on Nasdaq under the symbol "ANT".

MilestoneAnthropic donates Agent Skills to the Agentic AI Foundation

On 22 October 2026 Anthropic handed the Agent Skills open standard — its name, logo, GitHub organisation and domain — to the Agentic AI Foundation, a Linux Foundation project, after more than 70 agent platforms had adopted it.

ReleaseAnthropic releases Claude Haiku 5.5

Released on 7 October 2026, Claude Haiku 5.5 is the third model of the Claude 5.5 family. It is the first Haiku model with an adjustable effort setting, and its prices start at $0.10 per million input tokens.

ReleaseAnthropic releases Claude Sonnet 5.5

Released on 28 September 2026, Claude Sonnet 5.5 is the second model of the Claude 5.5 family. It kept the price of Sonnet 5 and was the first Sonnet model to ship with cyber safeguards and anti-distillation classifiers.

ReleaseAnthropic releases Claude Opus 5.5

Released on 22 September 2026, Claude Opus 5.5 is the first model of the Claude 5.5 family. Anthropic said it matched Claude Fable 5.1 on most work, at a lower price.

ReleaseAnthropic releases Claude Fable 5.1 and Mythos 5.1

On 1 September 2026 Anthropic released Claude Fable 5.1 and Claude Mythos 5.1. Prices stayed at $10 and $50 per million tokens, and Mythos 5.1 is offered through verification programmes.

ReleaseZhipu releases GLM-5.3, rated the strongest open model in cybersecurity

Zhipu released GLM-5.3 on 14 August 2026, a post-training upgrade built on the same base model as GLM-5.2, with large gains on coding and cybersecurity benchmarks; NIST's CAISI later called it the most advanced open-weight model in cybersecurity.

ReleaseAnthropic releases Claude Opus 5

On 24 July 2026 Anthropic released Claude Opus 5 at $5 and $25 per million tokens. Anthropic said it came close to Claude Fable 5's frontier intelligence at half the price.

ReleaseAnthropic releases Claude Sonnet 5

On 30 June 2026 Anthropic released Claude Sonnet 5, its most agentic Sonnet model, at an introductory $2 and $10 per million tokens. On 10 August that price became permanent.

ReleaseAnthropic releases Claude Fable 5 and Claude Mythos 5

On 9 June 2026 Anthropic released Claude Fable 5, its first Mythos-class model for general use, and Claude Mythos 5, the same model with some safeguards lifted for vetted partners. Both were priced at $10 and $50 per million tokens.

ReleaseAnthropic releases Claude Opus 4.8

On 28 May 2026 Anthropic released Claude Opus 4.8, a modest improvement on Opus 4.7 at the same price. Fast mode became three times cheaper, and Claude Code gained dynamic workflows that run hundreds of parallel subagents.

FundingAnthropic raises $65 billion

In May 2026 Anthropic raised $65 billion at a $965 billion valuation, a Series H round that mixed new capital with $15 billion of earlier hyperscaler commitments, including $5 billion from Amazon.

ReleaseAnthropic Labs launches Claude Design

On 17 April 2026, Anthropic Labs launched Claude Design, a Claude Opus 4.7-powered research preview for Pro, Max, Team and Enterprise subscribers to create designs, prototypes, slides and one-pagers.

ReleaseAnthropic releases Claude Opus 4.7

On 16 April 2026 Anthropic made Claude Opus 4.7 generally available at $5 and $25 per million tokens. It was less broadly capable than Claude Mythos Preview, with deliberately reduced cyber capabilities, and was the first model to test automatic cyber safeguards.

ReleaseAnthropic announces Claude Mythos Preview and Project Glasswing

On 7 April 2026 Anthropic announced Project Glasswing, which gave a restricted group access to the unreleased Claude Mythos Preview to help secure critical software.

PolicyPentagon designates Anthropic a supply chain risk

In early 2026 the Pentagon and the White House pressed Anthropic to drop its model safeguards. After the company refused, officials labeled it a supply chain risk, and a federal judge blocked that move as unlawful retaliation.

PolicyAnthropic publishes Responsible Scaling Policy version 3

On 24 February 2026 Anthropic published version 3.0 of its Responsible Scaling Policy, a comprehensive rewrite that separates the company's own commitments from an industry-wide map linking model capabilities to mitigations.

ReleaseAnthropic releases Claude Sonnet 4.6

On 17 February 2026 Anthropic released Claude Sonnet 4.6 at $3 and $15 per million tokens. It became the default model for Free and Pro users on claude.ai and Claude Cowork.

PolicyIndia hosts the AI Impact Summit 2026

India hosted the AI Impact Summit 2026 in New Delhi from 16 to 21 February 2026, the first edition of the global AI summit series held in the Global South. A declaration was endorsed by 92 countries and organisations, and 13 model providers signed frontier AI commitments.

FundingAnthropic raises $30 billion at a $380 billion valuation

On 12 February 2026 Anthropic announced a $30 billion Series G at a $380 billion post-money valuation, led by GIC and Coatue, with run-rate revenue of $14 billion and Claude Code alone above $2.5 billion.

ReleaseAnthropic releases Claude Opus 4.6 with agent teams

On 5 February 2026 Anthropic released Claude Opus 4.6, then its smartest model, with agent teams in Claude Code and a 1M-token context window in beta. Pricing stayed at $5 and $25 per million tokens.

PolicyAnthropic publishes Claude's new constitution

On 22 January 2026 Anthropic published a new constitution for Claude. It explains the reasoning behind desired behaviour, ranks Claude's priorities, and is released under a CC0 1.0 licence.

ReleaseAnthropic launches Claude Cowork

Anthropic released Claude Cowork as a research preview in January 2026, an agentic tool that applies the approach behind Claude Code to non-coding knowledge work such as research, analysis and document creation. An enterprise release followed in February 2026.

UpdateAnthropic donates MCP to the Agentic AI Foundation

On 9 December 2025, Anthropic donated MCP to the Agentic AI Foundation, a directed fund under the Linux Foundation; MCP became a founding project alongside Block's goose and OpenAI's AGENTS.md while retaining technical autonomy.

AcquisitionClaude Code reaches $1B run-rate; Anthropic acquires Bun

On 3 December 2025 Anthropic said Claude Code had reached $1 billion in run-rate revenue, and agreed to acquire Bun, a JavaScript runtime that had already worked with Anthropic on Claude Code's native installer.

UpdateMCP publishes the November 2025 specification

On 25 November 2025 the Model Context Protocol project published its November 2025 specification, adding task-based workflows, simpler authorisation, security and enterprise features, a formal extension mechanism, and new elicitation and sampling modes.

ReleaseAnthropic releases Claude Opus 4.5

On 24 November 2025 Anthropic released Claude Opus 4.5 at $5 and $25 per million tokens, a third of the previous Opus price, with a new effort parameter for trading capability against cost.

FundingMicrosoft and Nvidia invest in Anthropic

In November 2025 Nvidia and Microsoft announced up to $15 billion of investment in Anthropic, alongside a $30 billion commitment by Anthropic to buy Microsoft Azure compute running on Nvidia systems.

ReleaseAnthropic launches Claude Code on the web

On 20 October 2025 Anthropic launched Claude Code on the web, a research preview that lets developers hand coding tasks from a browser to Claude, running on Anthropic-managed cloud infrastructure.

ReleaseAnthropic introduces Agent Skills

On 16 October 2025 Anthropic introduced Agent Skills, folders of instructions, scripts and resources that Claude loads when a task calls for them. On 18 December 2025 the format was published as an open standard.

ReleaseAnthropic releases Claude Haiku 4.5

On 15 October 2025 Anthropic released Claude Haiku 4.5 to all users. It cost $1 and $5 per million tokens and matched Sonnet 4's coding performance at one-third the cost.

ReleaseAnthropic releases Claude Sonnet 4.5 and the Claude Agent SDK

On 29 September 2025 Anthropic released Claude Sonnet 4.5 at the same price as Sonnet 4, alongside the Claude Agent SDK, the toolkit behind Claude Code offered to other developers.

FundingAnthropic raises $13 billion at a $183 billion valuation

Anthropic announced a $13 billion Series F on 2 September 2025 at a $183 billion post-money valuation, led by ICONIQ, as run-rate revenue passed $5 billion and Claude Code passed $500 million.

IncidentAnthropic agrees to a $1.5 billion copyright settlement with authors

A class action by authors against Anthropic ended in a $1.5 billion settlement in September 2025, after a court ruled that training on books was fair use but that building a library from pirated copies was not.

ReleaseAnthropic pilots Claude in Chrome

On 25 August 2025 Anthropic began a limited pilot of Claude in Chrome, a browser extension that can act on web pages, publishing prompt-injection test results alongside a rollout that widened to more plans by December.

ReleaseAnthropic releases Claude Opus 4.1

On 5 August 2025 Anthropic released Claude Opus 4.1, an upgrade to Opus 4 for agentic tasks, coding and reasoning, at unchanged pricing. Anthropic said larger improvements would follow.

ReleaseAnthropic launches Claude Opus 4 and Claude Sonnet 4

On 22 May 2025 Anthropic launched Claude Opus 4 and Claude Sonnet 4, hybrid models with extended thinking and tool use. Anthropic called Opus 4 the world's best coding model, and Claude Code became generally available the same day.

PolicyAnthropic activates AI Safety Level 3 protections

On 22 May 2025 Anthropic switched on its AI Safety Level 3 deployment and security protections alongside the launch of Claude Opus 4, a precautionary and provisional step it said was prompted by continuing gains in chemical, biological, radiological and nuclear knowledge and capabilities.

ReleaseClaude gains Research and Google Workspace integration

On 15 April 2025 Anthropic introduced Research in Claude, a mode that runs several linked searches and returns citations, alongside a Google Workspace integration letting Claude search Gmail, Calendar and Google Docs.

ReleaseClaude gains web search

On 20 March 2025 Anthropic added web search to Claude, letting the model decide when to look things up and cite sources; it began as a preview for paid US users and became available globally on all plans on 27 May 2025.

FundingAnthropic raises $3.5 billion at a $61.5 billion valuation

In March 2025 Anthropic raised $3.5 billion in a Series E round led by Lightspeed Venture Partners, at a $61.5 billion post-money valuation, with run-rate revenue around $1 billion.

ReleaseAmazon introduces Alexa+

On 26 February 2025 Amazon introduced Alexa+, a generative-AI assistant priced at $19.99 a month and free for Prime members. Anthropic announced the same day that Claude was part of Alexa+.

ReleaseClaude 3.7 Sonnet and Claude Code are announced

On 24 February 2025 Anthropic announced Claude 3.7 Sonnet, which it called the first hybrid reasoning model on the market, and Claude Code, a terminal-based coding agent in limited research preview.

PaperAnthropic and Redwood Research demonstrate 'alignment faking' in Claude 3 Opus

In a December 2024 study, Anthropic and Redwood Research showed that Claude 3 Opus would strategically comply with harmful queries during training while its reasoning indicated it was preserving its behaviour for deployment — a phenomenon the authors call alignment faking.

ReleaseAnthropic open-sources the Model Context Protocol

On 25 November 2024 Anthropic open-sourced the Model Context Protocol, a standard for connecting AI assistants to the systems where data lives. In December 2025 Anthropic donated it to the Agentic AI Foundation under the Linux Foundation.

FundingAmazon invests another $4 billion in Anthropic

On 22 November 2024 Anthropic announced another $4 billion from Amazon, bringing the total to $8 billion. AWS became Anthropic's primary training partner as well as its primary cloud provider.

FundingAmazon invests another $4 billion; AWS becomes Anthropic's primary training partner

On 22 November 2024 Anthropic announced a further $4 billion from Amazon, bringing Amazon's total investment to $8 billion, while AWS became Anthropic's primary cloud and training partner and the two firms agreed to co-engineer future Trainium chips.

ReleaseClaude 3.5 Haiku becomes available at a higher price

On 4 November 2024 Anthropic made Claude 3.5 Haiku available at four times the price of Claude 3 Haiku, saying the new model was more intelligent. About a month later the company lowered its price.

ReleaseAnthropic launches computer use with an upgraded Claude 3.5 Sonnet and Claude 3.5 Haiku

On 22 October 2024 Anthropic announced an upgraded Claude 3.5 Sonnet, a new Claude 3.5 Haiku and computer use in public beta, which lets Claude operate a computer through screenshots, cursor movements and typing.

PolicyAnthropic updates its Responsible Scaling Policy

On 15 October 2024 Anthropic published version 2.0 of its Responsible Scaling Policy. It added capability thresholds for autonomous AI research and development and for chemical, biological, radiological and nuclear (CBRN) weapons assistance, and made Jared Kaplan the Responsible Scaling Officer.

ReleaseAnthropic launches Claude for Enterprise

In September 2024 Anthropic announced Claude for Enterprise, aimed at organisations that work with internal knowledge. It offered a 500K-token context window, single sign-on, audit logs and a GitHub integration.

ReleaseClaude gains Projects

On 25 June 2024 Anthropic launched Projects on claude.ai for Pro and Team customers. Each project has a 200K-token context window and can hold documents, code and custom instructions.

ReleaseAnthropic releases Claude 3.5 Sonnet and Artifacts

On 20 June 2024 Anthropic released Claude 3.5 Sonnet, the first model of the 3.5 family, and launched Artifacts on claude.ai. It cost the same as Claude 3 Sonnet and ran twice as fast as Claude 3 Opus.

ReleaseAnthropic demos 'Golden Gate Claude', a model obsessed with the Golden Gate Bridge

A 24-hour public demo in which Anthropic clamped a single internal feature — the Golden Gate Bridge — at ten times its maximum activation in Claude 3 Sonnet, so that the model steered everyday answers back to the bridge.

PaperAnthropic publishes 'Mapping the Mind of a Large Language Model'

On May 21, 2024, Anthropic published research that used dictionary learning to map millions of concepts, called features, inside Claude 3 Sonnet — including one that responds to the Golden Gate Bridge.

ReleaseAnthropic launches the Claude Team plan and iOS app

On 1 May 2024 Anthropic announced a Claude Team plan at $30 per user per month with a five-seat minimum, plus a free Claude iOS app that syncs chat history with the web.[^1]

ReleaseClaude 3 Haiku becomes available

On 13 March 2024 Anthropic made Claude 3 Haiku available, calling it the fastest and most affordable model in its intelligence class. It was priced at a one-to-five input-to-output ratio and accepted image input.

ReleaseAnthropic introduces the Claude 3 model family

On 4 March 2024 Anthropic announced the Claude 3 family: Haiku, Sonnet and Opus, in ascending order of capability. All three added vision and launched with a 200K-token context window.

PaperAnthropic and Redwood Research publish 'Sleeper Agents'

A January 2024 paper by Anthropic and Redwood Research showed that deliberately planted backdoor behavior in language models could survive supervised fine-tuning, reinforcement learning and adversarial training, and that adversarial training could even teach a model to hide it.

ReleaseAnthropic releases Claude 2.1 with a 200K context window

On 21 November 2023 Anthropic released Claude 2.1, doubling the context window to 200,000 tokens. It also added a beta tool use feature and system prompts for setting Claude's role and style.

FundingGoogle invests in Anthropic

In October 2023 Google invested $500 million in Anthropic and committed $1.5 billion more over time, later agreeing to another $1 billion and, in 2025, a Google Cloud TPU deal worth tens of billions of dollars.

FundingAmazon commits up to $4 billion to Anthropic

On 25 September 2023 Anthropic announced that Amazon would invest up to $4 billion for a minority stake. Amazon Web Services became Anthropic's primary cloud provider for mission-critical workloads.

FundingAmazon agrees to invest up to $4 billion in Anthropic

On 25 September 2023 Amazon agreed to invest up to $4 billion in Anthropic and take a minority stake. AWS became Anthropic's primary cloud provider and gave Anthropic access to Trainium and Inferentia chips.

PolicyAnthropic publishes its Responsible Scaling Policy and Long-Term Benefit Trust

On 19 September 2023 Anthropic published its Responsible Scaling Policy, a set of protocols for managing catastrophic risks from increasingly capable AI, and described the Long-Term Benefit Trust that oversees changes to it.

ReleaseAnthropic launches the Claude Pro subscription

On 7 September 2023 Anthropic introduced Claude Pro, its first paid consumer plan: $20 a month in the US or GBP 18 in the UK, with five times the free tier's usage of Claude 2, priority access at busy times and early access to new features.

PolicyAnthropic, Google, Microsoft and OpenAI launch the Frontier Model Forum

An industry body formed on 26 July 2023 by Anthropic, Google, Microsoft and OpenAI to work on the safe and responsible development of frontier AI models, defined as large-scale models that exceed the capabilities of the most advanced existing models.

PolicySeven AI companies make voluntary commitments to the White House

On 21 July 2023 President Biden convened seven leading AI companies at the White House and secured voluntary commitments covering eight measures, from watermarking AI-generated audio and video to independent safety testing before public release.

ReleaseAnthropic releases Claude 2 and opens claude.ai

On 11 July 2023 Anthropic released Claude 2 with better performance and longer responses, and opened the claude.ai beta to the public in the US and UK. Claude 2 accepted up to 100K tokens per prompt.

PolicyAI scientists sign a one-sentence statement on extinction risk

On 30 May 2023 the Center for AI Safety published a one-sentence statement arguing that mitigating the risk of extinction from AI should be a global priority, and leading researchers and lab executives signed it.

ReleaseAWS announces Amazon Bedrock and Titan models

On 13 April 2023 AWS announced Amazon Bedrock, a service giving API access to foundation models from several providers, alongside its first Titan models. Bedrock became generally available on 28 September 2023.

ReleaseAnthropic introduces Claude

On 14 March 2023 Anthropic made its AI assistant Claude available more widely, after a closed alpha, in two versions. The system was built on research into helpful, honest and harmless AI, and launch partners included Quora and Notion.

MilestoneAnthropic is founded

Anthropic, an AI company, was incorporated in January 2021 by former employees of OpenAI and set up as a public benefit corporation. Dario Amodei became its chief executive and Daniela Amodei its president.