CryptoDatadog1 day ago
Monitor prompt caching to optimize your token usage
1 min read
Datadog's 2026 State of AI Engineering report found 69% of input tokens in customer traces were system prompts. Prompt caching stores identical prefixes, cutting costs by roughly 90% on cache reads. Anthropic and OpenAI offer different caching controls, with Anthropic charging 1.25x for five-minute writes.
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