Anthropic has recently launched Claude Haiku 4.5, a small AI model designed to deliver impressive coding performance at a fraction of the cost and time compared to its predecessor, Claude Sonnet 4. This innovation targets software developers, data scientists, and business managers in the tech industry who are seeking efficient, cost-effective solutions for their operations.
Overview of Claude Haiku 4.5
Claude Haiku 4.5 is characterized as a latency-optimized model that not only matches the coding performance of Sonnet 4 but does so at more than twice the speed and one-third of the cost. Users can access this model through Anthropic’s API, as well as partner catalogs on platforms like Amazon Bedrock and Google Cloud Vertex AI. Notably, the pricing structure is set at $1 per million tokens (MTok) for input and $5 per MTok for output, making it an appealing choice for developers looking to optimize their budgets.
Positioning and Use Cases
Haiku 4.5 is specifically designed for applications that require real-time processing, such as:
- Interactive Assistants: Enhancing user engagement and response times.
- Customer Support Automation: Improving efficiency and customer experience.
- Pair Programming: Acting as a supportive tool for developers during coding sessions.
While Claude Sonnet 4 continues to lead in overall performance, Haiku 4.5 provides impressive capabilities in real-time computer-related tasks. For instance, it shows enhanced responsiveness in tools like Claude for Chrome and Claude Code, making it an invaluable asset in multi-agent projects. A recommended practice is to leverage Sonnet 4 for complex planning processes while employing multiple Haiku 4.5 models for execution, thus maximizing efficiency.
Performance Benchmarks
To validate the effectiveness of Haiku 4.5, Anthropic has released several performance benchmarks:
- SWE-bench Verified: Achieved an average score of 73.3% over 50 trials with a 128K thinking budget.
- Terminal-Bench: Demonstrated average performance across 11 runs with varied thinking budgets.
- OSWorld-Verified: Performance averaged over 4 runs with a total thinking budget of 128K.
- AIME / MMMLU: Averages over multiple runs utilizing default sampling with 128K thinking budgets.
Developers are encouraged to replicate these benchmarks within their own environments to assess performance against their specific systems and workflows.
Availability and Pricing
Claude Haiku 4.5 is now accessible via the Anthropic API, as well as on Amazon Bedrock and Google Cloud Vertex AI. The pricing for this model is structured as follows:
- Input: $1/MTok
- Output: $5/MTok
- Prompt-caching: $1.25/MTok for writing and $0.10/MTok for reading
Key Takeaways
Claude Haiku 4.5 stands out due to its combination of superior performance, cost efficiency, and speed:
- Delivers Sonnet-4-level coding performance at one-third the cost.
- Exceeds Sonnet 4 in various computer-use tasks, increasing responsiveness in coding tools.
- Recommended orchestration involves Sonnet 4 for planning and multiple Haiku 4.5 models for execution tasks.
Moreover, it has been released under ASL-2 with a lower measured misalignment rate compared to both Sonnet 4.5 and Opus 4.1.
Conclusion
With the launch of Claude Haiku 4.5, Anthropic provides a powerful yet economical solution that promises to enhance developer efficiency without demanding extensive changes to existing systems. This model is set to promote greater enterprise adoption, especially in sectors where cost and safety are pivotal. For those interested in further technical specifications, system cards, and documentation, Anthropic’s official website offers comprehensive resources.
Frequently Asked Questions
- What is Claude Haiku 4.5, and how does it differ from Sonnet 4?
- What are the main use cases for Haiku 4.5?
- How can developers access Claude Haiku 4.5?
- What types of tasks can benefit from Haiku 4.5’s speed and cost efficiency?
- Are there any recommended strategies for integrating Haiku 4.5 into existing workflows?

























