Internal API instruction following (hard)
Internal API instruction following (hard) benchmark - specific documentation not found in official sources
GPT-5 from OpenAI currently leads the Internal API instruction following (hard) leaderboard with a score of 0.640 across 7 evaluated AI models.
What Internal API instruction following (hard) measures
Internal API instruction following (hard) is a text benchmark that evaluates large language models on structured output and general tasks. LLM Stats tracks 7 models on this benchmark, with a maximum possible score of 1. Current average across reported models is 0.5, with the leader reaching 0.6.
Compare leaders on the best AI for structured output and best AI for general leaderboards.
Progress Over Time
Interactive timeline showing model performance evolution on Internal API instruction following (hard)
Internal API instruction following (hard) Leaderboard
| Context | Cost | License | ||||
|---|---|---|---|---|---|---|
| 1 |  OpenAI | — | — | — | ||
| 2 | OpenAI | — | — | — | ||
| 3 | OpenAI | — | — | — | ||
| 4 | OpenAI | — | 1.0M | $2.00 / $8.00 | ||
| 5 | OpenAI | — | 1.0M | $0.40 / $1.60 | ||
| 6 | OpenAI | — | 1.0M | $0.10 / $0.40 | ||
| 7 | OpenAI | — | 128K | $2.50 / $10.00 |
FAQ
Common questions about Internal API instruction following (hard).
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