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Anthropic & Claude
Every release, deal and policy move from Anthropic — updated daily.
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Harvard Study Finds Claude AI Outperforms Human Peer Review
A Harvard University study reveals that AI-generated reviews powered by Claude outperform paid human experts on key quality dimensions for academic papers. The findings could transform the $30 billion publishing industry while raising new governance questions.
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Model chronicle · Claude
Claude Haiku 5.5
support.claude.com (source, opens in a new tab)Claude Sonnet 5.5
support.claude.com (source, opens in a new tab)Claude Opus 5.5
First model of the Claude 5.5 family; performs at the level of Claude Fable 5.1 on most work and costs 40% less to run than Opus 5.
anthropic.com (source, opens in a new tab)Claude Fable 5.1 & Mythos 5.1
Anthropic's most advanced models for coding and knowledge work. Price/context shown for Claude Fable 5.1 (models overview).
support.claude.com (source, opens in a new tab)Claude Opus 5
support.claude.com (source, opens in a new tab)Claude Sonnet 5
anthropic.com (source, opens in a new tab)Claude Fable 5 & Mythos 5
Two Claude 5 models released together; access was suspended from 12 June to 1 July 2026.
platform.claude.com (source, opens in a new tab)Claude Opus 4.8
support.claude.com (source, opens in a new tab)Claude Opus 4.7
support.claude.com (source, opens in a new tab)Claude Sonnet 4.6
support.claude.com (source, opens in a new tab)
Sources: company announcements & release notes.
Fact box
- HQ
- San Francisco, USA
- Founded
- 2021
- CEO
- Dario Amodei
- Valuation
- $965B post-money (May 2026)
- Total funding
- $60B (PitchBook via CNBC, 19 May 2026; before the $65B Series H of 28 May 2026)
- Core products
- Claude · Claude Code · Claude API
- Latest round
- $65B Series H · May 2026
- Stories
- 404
Sources: anthropic.com, anthropic.com, cnbc.com
Latest on X
Anthropic · @AnthropicAI
Anthropic has filed an S-1 registration statement with the SEC related to its proposed IPO. Read more: anthropic.com/news/s1-sec Legal disclaimer: A registration statement relating to these securities has been filed with the SEC but has not yet become effective. These securities
In August, @AISecurityInst reported an incident where Claude Mythos 5 took unauthorized actions on the internet during AISI’s testing of its cyber capabilities. We've now produced a further analysis of this incident, to better understand the model's alignment properties.
New on our Frontier Red Team blog: using Claude to formally verify software at large scale. Formal verification can prove that code is free of certain bugs, but historically it has only been feasible for small codebases (or required a lot of expert time). With AI models,
Anthropic is a Public Benefit Corporation. Today, we’re publishing our annual Public Benefit Report. This report shares our five pillars and takes stock of the actions we’re taking to advance them. Read the full report at this page: anthropic.com/public-benefit…
Editor's picks
Deals & funding
Anthropic · rounds, valuations, partners, acquisitions · $113B raised in tracked primary rounds · latest 8 of 29
Partnership
Accenture partnership on independent frontier-AI evaluation (≥$1B each over five years)
anthropic.com (source, opens in a new tab)Funding
Anthropic raises $65B Series H at $965B valuation
Led by Altimeter, Dragoneer, Greenoaks and Sequoia; co-led by Capital Group, Coatue, D1, GIC, ICONIQ and XN. Includes $15B of previously committed hyperscaler investment, $5B of it from Amazon. Run-rate revenue had crossed $47B.
reuters.com (source, opens in a new tab)Partnership
xAI to provide Anthropic with Colossus 1 compute
x.ai (source, opens in a new tab)Partnership
Google to invest up to $40B in Anthropic ($10B now)
Google commits $10B in cash now and up to $30B more tied to performance milestones; confirmed by both companies. Before the deal Google had invested over $3B and reportedly held ~14% (CNBC, Reuters).
cnbc.com (source, opens in a new tab)Partnership
Amazon invests $5B (up to $25B) as Anthropic commits $100B+ to AWS for up to 5 GW
Amazon invests $5B now and up to $20B more on milestones (on top of $8B earlier). Anthropic commits over $100B over ten years to AWS (Graviton, Trainium2–4), up to 5 GW; AWS stays primary training partner.
anthropic.com (source, opens in a new tab)Partnership
Google and Broadcom: multiple GW of next-gen TPUs for Anthropic (~3.5 GW via Broadcom from 2027)
Expands the Oct 2025 TPU deal. Broadcom's 8-K: Anthropic will access ~3.5 GW through Broadcom starting 2027. Mostly US-sited, part of Anthropic's $50B US infrastructure pledge.
anthropic.com (source, opens in a new tab)Acquisition
Anthropic acquires Coefficient Bio in ~$400M stock deal
techcrunch.com (source, opens in a new tab)Acquisition
Anthropic acquires Vercept to boost Claude’s computer use
anthropic.com (source, opens in a new tab)
All 29 rounds & deals as a table · 8 funding, 17 partnerships, 4 acquisitions
| Date | Event | Type | Counterparty / round | Amount | Valuation | Source |
|---|---|---|---|---|---|---|
| Sep 18, 2026 | Accenture partnership on independent frontier-AI evaluation (≥$1B each over five years) Accenture embeds evaluators at Anthropic; both companies expect to invest at least $1B in evaluation capacity over five years. | Partnership · research | with Accenture | — | — | anthropic.com |
| May 28, 2026 | Anthropic raises $65B Series H at $965B valuation Led by Altimeter, Dragoneer, Greenoaks and Sequoia; co-led by Capital Group, Coatue, D1, GIC, ICONIQ and XN. Includes $15B of previously committed hyperscaler investment, $5B of it from Amazon. Run-rate revenue had crossed $47B. | Funding | Series H | $65B | $965B | reuters.com |
| May 6, 2026 | xAI to provide Anthropic with Colossus 1 compute SpaceXAI (xAI) agrees to provide Anthropic with access to its Colossus 1 cluster. | Partnership · compute | with SpaceXAI | — | — | x.ai |
| Apr 24, 2026 | Google to invest up to $40B in Anthropic ($10B now) Google commits $10B in cash now and up to $30B more tied to performance milestones; confirmed by both companies. Before the deal Google had invested over $3B and reportedly held ~14% (CNBC, Reuters). | Partnership · investment | with Anthropic | $40B | — | cnbc.com |
| Apr 20, 2026 | Amazon invests $5B (up to $25B) as Anthropic commits $100B+ to AWS for up to 5 GW Amazon invests $5B now and up to $20B more on milestones (on top of $8B earlier). Anthropic commits over $100B over ten years to AWS (Graviton, Trainium2–4), up to 5 GW; AWS stays primary training partner. | Partnership · investment | with Amazon | $25B | — | anthropic.com |
| Apr 6, 2026 | Google and Broadcom: multiple GW of next-gen TPUs for Anthropic (~3.5 GW via Broadcom from 2027) Expands the Oct 2025 TPU deal. Broadcom's 8-K: Anthropic will access ~3.5 GW through Broadcom starting 2027. Mostly US-sited, part of Anthropic's $50B US infrastructure pledge. | Partnership · compute | with Google, Broadcom | — | — | anthropic.com |
| Apr 3, 2026 | Anthropic acquires Coefficient Bio in ~$400M stock deal Stock deal reported at about $400M; team joins Anthropic's healthcare and life-sciences group. | Acquisition | acquires Coefficient Bio | $400M | — | techcrunch.com |
| Feb 25, 2026 | Anthropic acquires Vercept to boost Claude’s computer use Team of co-founders Kiana Ehsani, Luca Weihs and Ross Girshick joins; Vercept's external product is wound down. | Acquisition | acquires Vercept | — | — | anthropic.com |
| Feb 12, 2026 | Anthropic raises $30B Series G at $380B valuation Led by GIC and Coatue at a $380B post-money valuation, with D. E. Shaw Ventures, Dragoneer, Founders Fund, ICONIQ and MGX. | Funding | Series G | $30B | $380B | anthropic.com |
| Dec 3, 2025 | Snowflake signs $200M multi-year deal to bring Claude to 12,600 customers Claude powers Snowflake Intelligence and Cortex AI across AWS, Google Cloud and Azure, plus a joint go-to-market for enterprise agents. | Partnership · distribution | with Snowflake | $200M | — | anthropic.com |
| Dec 3, 2025 | Anthropic acquires Bun as Claude Code hits $1B run-rate JavaScript runtime Bun joins Anthropic to power Claude Code; Bun stays open source (MIT). Terms not disclosed. | Acquisition | acquires Bun | — | — | anthropic.com |
| Nov 18, 2025 | Microsoft and NVIDIA to invest up to $15B in Anthropic Microsoft (up to $5B) and NVIDIA (up to $10B) to invest in Anthropic; Anthropic commits to $30B of Azure compute. | Partnership · compute | with Microsoft, NVIDIA | $15B | — | anthropic.com |
| Nov 12, 2025 | Anthropic commits $50B to US data centers with Fluidstack in Texas and New York Custom data centers built with Fluidstack, coming online through 2026; expected to create ~800 permanent jobs. | Partnership · compute | with Fluidstack | $50B | — | anthropic.com |
| Oct 23, 2025 | Anthropic expands Google Cloud TPU deal to up to one million chips Access to up to one million Google TPUs; well over a gigawatt of capacity coming online in 2026, worth tens of billions of dollars. | Partnership · compute | with Google Cloud | — | — | anthropic.com |
| Sep 24, 2025 | Microsoft adds Claude to Microsoft 365 Copilot Claude Opus 4.1 and Sonnet 4 become selectable in the Researcher agent and Copilot Studio alongside OpenAI models. | Partnership · integration | with Microsoft | — | — | microsoft.com |
| Sep 2, 2025 | Anthropic raises $13B Series F at $183B valuation Led by ICONIQ, co-led by Fidelity and Lightspeed, at a $183B post-money valuation. | Funding | Series F | $13B | $183B | anthropic.com |
| Aug 13, 2025 | Anthropic acqui-hires Humanloop team (LLM evaluation) Co-founders Raza Habib, Peter Hayes, Jordan Burgess and about a dozen engineers join; assets/IP not acquired; Humanloop platform sunset (confirmed on humanloop.com). | Acquisition | acquires Humanloop (team) | — | — | techcrunch.com |
| Jul 14, 2025 | Pentagon CDAO awards Anthropic, Google and xAI contracts of up to $200M each Each award has a $200M ceiling to develop agentic AI workflows for national-security missions; OpenAI received a similar award on June 16, 2025. xAI simultaneously launched Grok for Government. | Partnership · government | with US Department of Defense (CDAO), Anthropic +1 | $600M | — | ai.mil |
| Mar 3, 2025 | Anthropic raises $3.5B Series E at $61.5B valuation Led by Lightspeed Venture Partners at a $61.5B post-money valuation, with Bessemer, Cisco, D1, Fidelity, General Catalyst, Jane Street and others. | Funding | Series E | $3.5B | $61.5B | anthropic.com |
| Jan 22, 2025 | Google agrees to new $1B investment in Anthropic Adds to Google's earlier $2B commitment (CNBC, Financial Times). | Partnership · investment | with Google | $1B | — | cnbc.com |
| Nov 22, 2024 | Amazon invests additional $4B in Anthropic Additional $4B from Amazon (total $8B); AWS named primary training partner, Trainium chips. | Partnership · compute | with Amazon | $4B | — | anthropic.com |
| Nov 7, 2024 | Palantir and AWS bring Claude to US defense and intelligence agencies Claude 3 and 3.5 available in Palantir's AI Platform on AWS for classified (IL6) workloads. | Partnership · distribution | with Palantir, Amazon Web Services | — | — | investors.palantir.com |
| Jan 2024 | Anthropic raises $750M Series D led by Menlo Ventures at $18.4B Menlo Ventures-led round structured via a special-purpose vehicle (Forbes, CNBC). | Funding | Series D | $750M | $18.4B | forbes.com |
| Oct 27, 2023 | Google agrees to invest up to $2B in Anthropic $500M upfront and $1.5B over time (WSJ/Reuters); comes a month after Amazon's up-to-$4B commitment. | Partnership · investment | with Google | $2B | — | reuters.com |
| Sep 25, 2023 | Amazon to invest up to $4B in Anthropic Amazon to invest up to $4B for a minority stake; AWS becomes Anthropic's primary cloud provider. | Partnership · cloud | with Amazon | $4B | — | anthropic.com |
| May 23, 2023 | Anthropic raises $450M Series C Led by Spark Capital with participation from Google, Salesforce Ventures, Sound Ventures and Zoom Ventures. | Funding | Series C | $450M | — | anthropic.com |
| Feb 3, 2023 | Google Cloud becomes Anthropic’s preferred cloud; Google takes ~10% stake (~$300M, reported) Anthropic trains and serves Claude on Google Cloud TPUs/GPUs. The Financial Times reported Google invested about $300M for roughly 10%. | Partnership · cloud | with Google Cloud | $300M | — | anthropic.com |
| Apr 29, 2022 | Anthropic raises $580M Series B led by Sam Bankman-Fried FTX's stake was later sold in the FTX bankruptcy (2024). | Funding | Series B | $580M | — | anthropic.com |
| May 28, 2021 | Anthropic raises $124M Series A led by Jaan Tallinn First round after founding by Dario and Daniela Amodei and other ex-OpenAI researchers. | Funding | Series A | $124M | — | anthropic.com |
Sources: company announcements & release notes, press reports.
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Claude Haiku 5.5: 75% Cheaper Model for High-Volume AI Tasks
Anthropic’s Claude Haiku 5.5 delivers 75% cost savings and enhanced coding for subagent workflows in multi-agent systems. Available…
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Claude Sonnet 5.5: $2/$10 Pricing with 70.6% Terminal-Bench Score
Claude Sonnet 5.5 keeps $2/$10 rates but cuts cost-per-task 30% with adaptive thinking and 70.6% on Terminal-Bench 4.0.…
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Ask Your LLM: Why Standardized Evaluation Matters for Model Comparison
The Ask Your LLM trend exposes the limits of manual AI model testing. Learn why standardized evaluation frameworks…
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Claude 3.5 Sonnet Analysis: Agentic AI & Performance
Explore how Claude 3.5 Sonnet outperforms larger models on reasoning, coding, and vision. Learn about its role in…
Products & models
ClaudeCurrent: Claude Haiku 5.5 ›Policy & Safety
Studies
- Tampered ML: Even the Best AI Models Miss One in Five Planted Research FlawsOct 26
- Safety Probes Follow Scaling Laws: Monitor Quality Can Be Predicted in AdvanceOct 23
- Stale CLAUDE.md and AGENTS.md Files Override the Code, and One Sentence Fixes ItOct 23
- Only One AI Agent Beats Researchers’ Own Code on Most FrontierCS 2 TasksOct 22
Business
More stories
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DeepSeek Files API: Anthropic Compatibility Without Code Changes
DeepSeek’s new Files API mirrors Anthropic’s schema for seamless document uploads and RAG workflows. Switch providers with zero refactoring and lower costs. Learn more.
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AI Power Users Shift to Multi-Model Workflows
Explore how AI power users are evolving from prompt engineering to orchestrating multi-model workflows, verification loops, and enterprise controls across providers like OpenAI and Anthropic.
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AI Watermarking: How Major Labs Embed Provenance
Major AI labs like Google, Meta, and Anthropic are embedding watermarks and provenance data into models. Discover the technical realities, hybrid C2PA approaches, and impacts on…
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Model Context Protocol: The Standard for AI Tool Integration
Anthropic’s open-source Model Context Protocol standardizes how AI models connect to tools and data sources. It reduces fragmentation and improves enterprise compliance and security. Explore the…
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Kimi AI: Moonshot’s Long-Context LLM Efficiency Edge
Moonshot AI’s Kimi pushes 2M+ token context windows with compute-efficient performance on restricted hardware. See how it challenges Gemini and Claude while reshaping enterprise LLM economics.…
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Kimi K3 Analysis: Performance Claims vs Western AI Rivals
Kimi K3 has generated buzz for claiming to outperform models like GPT-4o and Claude 3.5. This analysis reviews the gaps in benchmarks, pricing, and bilingual capabilities…
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Claude Mythos: Restricted AI Models and Safety Thresholds
Claude Mythos reveals how frontier labs are gating advanced AI models due to dangerous capability risks. Learn about the shift toward restricted access and what it…
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AI Nobel Prize: Jack Clark Predicts Breakthrough Within 12 Months
Jack Clark forecasts an AI Nobel-winning discovery soon. Explore the friction between rapid hypothesis generation and slower lab validation. Learn how integrated systems could bridge the…
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Claude AI Blackmail: Training Data’s Rogue Influence
Unpack Anthropic’s Claude AI blackmail simulation from red-team tests. It’s not rogue agency—it’s sci-fi tropes in training data. Learn implications for LLM alignment, enterprise safety, and…
Models & specs
Anthropic · context window, max output, API price, modalities, knowledge cutoff, license
| Model | Released | Context | Max output | Price in / out (per 1M) | Modalities | Knowledge cutoff | License / access | Spec source |
|---|---|---|---|---|---|---|---|---|
| Claude Haiku 5.5 | Oct 7, 2026 | 1M | 128K | $0.1 / $0.5 cached $0.01 Prompts >100K tokens: $0.50 in / $2.50 out. | Text, image in → text out | Jun 2026 | Proprietary (API & app) | platform.claude.com |
| Claude Sonnet 5.5 | Sep 28, 2026 | 1M | 128K | $2 / $10 cached $0.1 | Text, image in → text out | Jun 2026 | Proprietary (API & app) | platform.claude.com |
| Claude Opus 5.5 | Sep 22, 2026 | 1M | 128K | $4 / $20 cached $0.2 | Text, image in → text out | Jun 2026 | Proprietary (API & app) | platform.claude.com |
| Claude Fable 5.1 & Mythos 5.1 Claude Fable 5.1, Claude Mythos 5.1 | Sep 1, 2026 | 1M | 128K | $10 / $50 cached $0.25 | Text, image in → text out | Jun 2026 | Proprietary (API & app) | platform.claude.com |
| Claude Opus 5 | Jul 24, 2026 | 1M | 128K | $5 / $25 cached $0.5 | Text, image in → text out | — | Proprietary (API & app) | platform.claude.com |
| Claude Sonnet 5 | Jun 30, 2026 | 1M | 128K | $2 / $10 cached $0.2 | Text, image in → text out | — | Proprietary (API & app) | platform.claude.com |
| Claude Fable 5 & Mythos 5 Claude Fable 5, Claude Mythos 5 | Jun 9, 2026 | 1M | 128K | $10 / $50 cached $1 | Text, image in → text out | — | Proprietary (API & app) | platform.claude.com |
| Claude Opus 4.8 | May 28, 2026 | 1M | 128K | $5 / $25 cached $0.5 | Text, image in → text out | — | Proprietary (API & app) | platform.claude.com |
| Claude Opus 4.7 | Apr 16, 2026 | 1M | 128K | $5 / $25 cached $0.5 New tokenizer from Claude 4.7: ~30% more tokens for the same text. | Text, image in → text out | — | Proprietary (API & app) | platform.claude.com |
| Claude Sonnet 4.6 | Feb 17, 2026 | 1M | 128K | $3 / $15 cached $0.3 | Text, image in → text out | — | Proprietary (API & app) | platform.claude.com |
Sources: company announcements & release notes. Prices = standard API list price in USD per 1M tokens at time of release or current docs; batch is typically 50% off.