Expired50% confidenceFactExact time
Anthropic uses its own API format rather than being compatible with the OpenAI interface standard, which deepens vendor lock-in effects.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/7/2026
First Seen
Valid until: 10/5/2026(expired)
Sources
How Anthropic Gradually Lost Developer Trust: Pricing, Transparency, and Vendor Lock-in
hackernewshackernews7/6/2026
Related Claims
UnverifiedAnthropic's revenue from API calls actually surpasses that of OpenAI.84% similarVerifiedOpenAI's API interface specification has become the de facto communication standard in the AI industry, and many model providers including Anthropic, Google, and Mistral offer interfaces compatible with this format.82% similarUnverifiedOpenAI's and Anthropic's Tool Use protocol formats are not compatible with each other, and best practices for system prompts also differ.79% similarUnverifiedOpenCode's multi-model support architecture shields interface differences across different vendors through an abstraction layer (typically compatible with the OpenAI API format).78% similar
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https://kongchang.com/claim/170416API
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