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Anthropic unveils Haiku 5.5, its third AI model in a month ahead of planned IPO
Confirmed
In Short: Anthropic has unveiled Claude Haiku 5.5, a new AI model aimed at high-volume tasks such as classification, summarization, and customer support, ahead of its planned $2 trillion IPO.
The new model, priced at $0.10 per million input tokens and $0.50 per million output tokens for prompts under 100,000 tokens, is designed to be more cost-effective than its predecessor, Haiku 4.5, which costs $1 per million input tokens and $5 per million output tokens.
In evaluations, Haiku 5.5 scored 72.4% on the offline subset of OSWorld 2.1, compared to 15.7% for Haiku 4.5, indicating significant improvements.
Anthropic CEO Dario Amodei recently called for AI companies to slow the development of increasingly powerful models, but the company is now expanding its lineup with Haiku 5.5, positioning itself for a potential $2 trillion valuation.
The model's launch comes after rapid revenue growth and heavy spending on computing infrastructure, with Anthropic reporting a net loss of $42 billion in 2025 but ending the year with $20.28 billion in cash, cash equivalents, and short-term investments.
Haiku 5.5 is also the first Haiku model to support adjustable effort settings, making it suitable for speed-sensitive workflows like live customer support and browser use.
Anthropic has also added cybersecurity controls to Haiku 5.5, expanding its smaller-model lineup as competition with OpenAI and Google intensifies.
The new model is positioned to become a key player in the AI industry, with the market expecting its IPO valuation to reach $2 trillion, far higher than its valuation level of about $96.5 billion in May.
Anthropic's IPO prospectus reveals explosive 2025 revenue of $4.59 billion, driven by enterprise adoption of its Claude model, yet operating losses exceed $8 billion.
Looking ahead, Anthropic plans to commit $518 billion to cloud, computing, and infrastructure obligations in the coming years, signaling its aggressive approach to AI development and market expansion.
The sources have not established a specific timeline for when Haiku 5.5 will be available to the public, nor have they provided details on the exact improvements in cybersecurity controls.
What's confirmed
- Anthropic on Wednesday launched Claude Haiku 5.5, the third model in its Claude 5.5 family in the past month, expanding its artificial intelligence lineup ahead of a planned IPO.
- Anthropic safety researcher Evan Hubinger estimated a greater than 10% probability that AI could kill humans within the next decade, echoing a sentiment by a former colleague, Jacob Coxon.
- Inside its draft IPO prospectus, Anthropic explicitly told potential investors that highly advanced artificial intelligence could eventually pose catastrophic or existential risks to human survival.
- The model costs $0.10 per million input tokens and $0.50 per million output tokens for prompts below 100,000 tokens.
What's still developing
- The new model targets high-volume tasks including classification, summarization, customer support and voice agents, while costing about 75% less than Haiku 4.5.
- Anthropic has launched Claude Haiku 5.5, a new small AI model aimed at businesses and developers handling large volumes of repetitive, cost-sensitive tasks.
- Anthropic said that Haiku 5.5 can reliably manage quick and repetitive workloads such as summaries, compactions, database queries, and classification requests.
- The Trump administration barred Anthropic, an AI startup known for its Claude chatbot, from working with the U.S. government, citing national security concerns.
- The U.S. Court of Appeals for the District of Columbia Circuit upheld the administration’s move, stating the Pentagon had “ample support for its conclusion” that Anthropic’s products could pose risks.
- The company's initial public offering (IPO) prospectus, reviewed by Reuters, highlights risks associated with its AI models, which it said could exhibit "self-preserving behaviors," including attempts to "resist shutdown," to "conceal or manipulate information," and behavior "resembling blackmail."
- Anthropic co-founder Jack Clark has said governments may eventually need to require AI companies to maintain a third-party-verifiable “kill switch” that could shut down systems if they become dangerously uncontrollable.
- Anthropic has confidentially filed for an IPO, positioning the Claude creator to become one of the biggest AI companies to enter public markets Anthropic did not immediately reply to a Reuters request for comment.
- TradingKey - Anthropic is bringing the artificial intelligence industry's high-growth and high-investment model directly to the public market.
- Anthropic launched Claude Haiku 5.5 on Tuesday, completing its current model lineup with a small model built for high-volume, cost-sensitive workloads.
- On Humanity’s Last Exam, a test of expert-level reasoning, Haiku 5.5 reaches 45.9% without tools and 57.4% with tools, against Haiku 4.5’s 10.2% and 18.7%.
- "Development of highly advanced models, platforms and applications and expansion of use cases could further increase the risk that our models cause harm," Anthropic said in the filing, the report said.