Comparing Efficiency of Data Formats for the Claude API
The article benchmarks the token usage and cost of different data formats (JSON, YAML, Markdown, Plain Text, TOON) when used with the Claude API. It finds significant differences in token consumption, with TOON being the most efficient format.
Why it matters
The findings can help developers and AI practitioners optimize their costs when using the Claude API by choosing the most efficient data format.
Key Points
- 1JSON, the standard API format, consumes the most tokens
- 2TOON, a new format designed for LLM prompts, reduces token usage by up to 73%
- 3Markdown is the most
- 4 format for LLMs, with good token efficiency
- 5The author ran 450 API calls across 8 real-world scenarios to gather the data
Details
The article compares the token usage and cost of 5 different data formats when used with the Claude API: JSON, YAML, Markdown, Plain Text, and a new format called TOON. The author ran 450 API calls across 8 real-world scenarios and found significant differences in token consumption. For example, a 200-product catalog in JSON costs 15,879 tokens, while in TOON it costs only 6,088 - a 62% difference. TOON was specifically designed to minimize tokens while preserving the ability to round-trip to JSON. The author concludes that users are overpaying for prompts by not optimizing their data format, and recommends TOON as the most efficient choice for Claude API usage.
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