01
Official API or machine-readable source
Structured provider-owned pricing sources are preferred when available.
Sources & Methodology
The tracker favors official, narrow, and low-frequency sources. HTML parsing is treated as a cautious fallback, not a default contract.
Source priority
02
Official docs, changelog, or pricing page
Provider documentation and official pricing pages are used when structured sources are not available.
03
Human-facing HTML parsing
HTML parsing is a last resort and is kept narrow, low-frequency, and conservative.
Collection boundaries
No broad crawling.
No login-required content.
No challenge, CAPTCHA, authentication, or rate-limit bypass.
No claim that robots.txt alone makes a source appropriate.
Current source status
OpenAI and Anthropic are currently treated as caution-level official pricing page sources. That means the pricing pages are useful official references, but they are not treated as stable machine-readable interfaces.
Provider-specific pricing concepts may require normalization. For example, Anthropic prompt caching read pricing is displayed with a cached input caveat where relevant.