Anthropic’s new Haiku 4.5 model rivals Sonnet 4 at one-third the price
Anthropic has released Claude Haiku 4.5, a latency-optimized small AI model. It matches the coding performance of Claude Sonnet 4 at more than double the speed and one-third the cost, and is available via API and cloud partners.
The model targets applications with tight latency budgets and high throughput demands, including real-time assistants, customer-support automation, and pair-programming. Anthropic positions Haiku 4.5 as a drop-in replacement for Haiku 3.5 and Sonnet 4 in cost-sensitive, interactive workloads. It reportedly surpasses Sonnet 4 on “computer use” tasks, which involve GUI and browser manipulation for products like Claude for Chrome. The model is also described as materially improving responsiveness in Claude Code for multi-agent projects and rapid prototyping.
In Anthropic’s model hierarchy, Haiku 4.5 provides near-frontier capabilities with greater cost-efficiency. The company affirmed that its Sonnet 4.5 model remains the frontier offering and “the best coding model in the world.” Anthropic suggests an orchestration pattern where Sonnet 4.5 handles complex, multi-step planning, and a pool of Haiku 4.5 workers executes the sub-tasks in parallel. This approach is recommended to balance high-level reasoning with cost-effective, high-speed execution for large or complex projects.
Developers can access the model immediately through Anthropic’s API with the identifier `claude-haiku-4-5`. It is also available on Amazon Bedrock and Google Cloud Vertex AI, though Anthropic notes that regional coverage and model IDs within these cloud platforms may update over time. The API price is $1 per million input tokens and $5 per million output tokens. For workflows utilizing prompt-caching, the rates are listed at $1.25 per million write tokens and $0.10 per million read tokens, offering further cost reductions for repeated queries.
Anthropic published benchmark results with methodology details, stating the data shows coding parity with Sonnet 4 and superior performance on computer-use tasks under its test scaffolds. The results include:
- SWE-bench Verified: 73.3% success over 50 trials, using a simple scaffold with two tools (bash, file edits), a 128K thinking budget, default sampling, and no test-time compute.
- Terminal-Bench: An average over 11 runs with the Terminus-2 agent, where six runs had no thinking budget and five had a 32K thinking budget.
- OSWorld-Verified: An average across four runs with a 100-step maximum, a 128K total thinking budget, and a 2K per-step configuration.
- AIME / MMMLU: Averages from multiple runs using default sampling and 128K thinking budgets.
The company advises that users should replicate tests using their own specific orchestration, tool stacks, and thinking budgets before generalizing the performance outcomes to their own applications.
Claude Haiku 4.5 is released under the ASL-2 license. According to Anthropic’s internal tests, the model has a lower measured misalignment rate than both Sonnet 4.5 and Opus 4.1, indicating a different safety profile within the company’s evaluation framework.
Featured image credit
FAQs
Frequently Asked Questions
What is a Premium Domain Name? A premium domain name is the digital equivalent of prime real estate. It’s a short, catchy, and highly desirable web address that can significantly boost your brand's impact. These exclusive domains are already owned but available for purchase, offering you a shortcut to a powerful online presence. Why Choose a Premium Domain? Instant Brand Boost: Premium domains are like instant credibility boosters. They command attention, inspire trust, and make your business look established from day one. Memorable and Magnetic: Short, sweet, and unforgettable - these domains stick in people's minds. This means more visitors, better recall, and ultimately, more business. Outshine the Competition: In a crowded digital world, a premium domain is your secret weapon. Stand out, get noticed, and leave a lasting impression. Smart Investment: Premium domains often appreciate in value, just like a well-chosen piece of property. Own a piece of the digital world that could pay dividends. What Sets Premium Domains Apart? Unlike ordinary domain names, premium domains are carefully crafted to be exceptional. They are shorter, more memorable, and often include valuable keywords. Plus, they often come with a built-in advantage: established online presence and search engine visibility. How Much Does a Premium Domain Cost? The price tag for a premium domain depends on its desirability. While they cost more than standard domains, the investment can be game-changing. Think of it as an upfront cost for a long-term return. BrandBucket offers transparent pricing, so you know exactly what you're getting. Premium Domains: Worth the Investment? Absolutely! A premium domain is more than just a website address; it's a strategic asset. By choosing the right premium domain, you're investing in your brand's future and setting yourself up for long-term success. What Are the Costs Associated with a Premium Domain? While the initial purchase price of a premium domain is typically higher than a standard domain, the annual renewal fees are usually the same. Additionally, you may incur transfer fees if you decide to sell or move the domain to a different registrar. Can I Negotiate the Price of a Premium Domain?
In some cases, it may be possible to negotiate the price of a premium domain. However, the success of negotiations depends on factors such as the domain's demand, the seller's willingness to negotiate, and the overall market conditions. At BrandBucket, we offer transparent, upfront pricing, but if you see a name that you like and wish to discuss price, please reach out to our sales team.
How Do I Transfer a Premium Domain?
Transferring a premium domain involves a few steps, including unlocking the domain, obtaining an authorization code from the current registrar, and initiating the transfer with the new registrar. Many domain name marketplaces, including BrandBucket, offer assistance with the transfer process.
