Unverified50% confidenceFactExact time
OpenAI-compatible endpoints follow the OpenAI Chat Completions API specification, but 'compatible' does not mean 'behaviorally identical,' and vendors may differ in their implementations of token counting rules and max_tokens semantics.
1
Sources
50%
Confidence
Long-term
Relevance
10/12/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedIn OpenAI's Chat Completions API, system prompts exist in the form of {"role": "system"} and have a higher instruction priority than user messages.77% similarVerifiedOpenAI's Chat Completions API has become the de facto industry standard, with most providers offering compatible interfaces.75% similar
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