Reasoning
No current rating
Mathematical and scientific problem solving.
Awaiting a qualified category score
Model profile / OpenAI
GPT-5.3 Instant is a proprietary model variant recorded in the BenchLM public dataset.
Four areas of evidence
Mathematical and scientific problem solving.
Software engineering and programming.
Factual reliability and instruction following.
Tool use, workflows and professional tasks.
Current index snapshot · 2026-09-13. Each category uses its own scale; scores across categories are not directly comparable. Counts describe published catalogue evidence. A point lead does not establish superiority.
Performance in context
GPT-5.3 Instant has no current Capabilities rating. Explore the rated models below.
Lumina Capabilities Index
The current Capabilities cohort, with available operational measurements.
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Lumina Capabilities Index
The current Capabilities cohort, with available operational measurements.
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Explore the detail
No current index estimate. Available benchmark measurements and source records are retained below.
| Benchmark | Result | Published configuration | Source |
|---|---|---|---|
| No matching measurements. Try another search. | |||
No specialist task observations retained for this model.