Question 1

Is Claude Sonnet 5 cheaper than Claude Sonnet 4?

Accepted Answer

Under an illustrative mix of 1M input and 200K output tokens, the stored listed rates make Claude Sonnet 5 approximately 33% lower. This directional estimate excludes discounts, fees, taxes, availability, latency, and quality; verify current provider terms.

Question 2

What are the input and output token rates for Claude Sonnet 4 and Claude Sonnet 5?

Accepted Answer

Claude Sonnet 4 is listed at $3.00 per 1M input tokens and $15.00 per 1M output tokens. Claude Sonnet 5 is listed at $2.00 per 1M input tokens and $10.00 per 1M output tokens.

Question 3

How much can be saved by migrating between Claude Sonnet 4 and Claude Sonnet 5?

Accepted Answer

Depending on your exact prompt length and output generation volume, switching to Claude Sonnet 5 can reduce raw API token spend by approximately 33%. Use ModelPriceLab's cost diagnose tool to model your specific monthly workload.

Question 4

What should teams evaluate before switching from Claude Sonnet 4 to Claude Sonnet 5?

Accepted Answer

Before migrating production workloads, engineering teams should evaluate output quality, structured JSON compliance, prompt sensitivity, latency percentiles, rate limits, and fallback strategies.

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Claude Sonnet 4 vs Claude Sonnet 5

Claude Sonnet 4

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