A common pattern for developers building with generative media is to use two types of models. A cheaper, lower-quality 'workhorse' model is used for high-volume tasks like prototyping. A second, expensive, state-of-the-art 'hero' model is then reserved for the final, high-quality output, optimizing for cost and quality.

Use the more powerful Opus model when you don't fully understand the problem you're trying to solve. For well-scoped, clearly defined tasks, the faster and cheaper Sonnet model is often sufficient and highly effective, as the key difference is Opus's ability to reinterpret vague requests.

Don't use your most powerful and expensive AI model for every task. A crucial skill is model triage: using cheaper models for simple, routine tasks like monitoring and scheduling, while saving premium models for complex reasoning, judgment, and creative work.

An effective cost-saving strategy for agentic workflows is to use a powerful model like Claude Opus to perform a complex task once and generate a detailed 'skill.' This skill can then be reliably executed by a much cheaper and faster model like Sonnet for subsequent use.

To optimize AI agent costs and avoid usage limits, adopt a “brain vs. muscles” strategy. Use a high-capability model like Claude Opus for strategic thinking and planning. Then, instruct it to delegate execution-heavy tasks, like writing code, to more specialized and cost-effective models like Codex.

An emerging rule from enterprise deployments is to use small, fine-tuned models for well-defined, domain-specific tasks where they excel. Large models should be reserved for generic, open-ended applications with unknown query types where their broad knowledge base is necessary. This hybrid approach optimizes performance and cost.

The 'best' model is task-dependent. While a frontier model like GPT-5.6 Soul excels at complex prototyping, more balanced models prove superior for other common tasks. For example, GPT-5.6 Terra is better for writing clean PRDs, and Anthropic's Sonnet is preferred for generating a human-like agentic voice.

State-of-the-art models like Claude Opus are often overkill and unnecessarily expensive for simple, routine tasks like summarizing emails. Using cheaper, less powerful models for these straightforward automations provides significant cost savings without sacrificing performance where it's not needed.

A single AI agent can run multiple "sub-bots" for different tasks. To optimize performance and cost, assign different underlying models to each. Use a powerful model like Claude Opus for complex tasks, and a cheaper model like Sonnet for routine functions.