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Lumina Reasoning Index

By LuminaIndex designed by LuminaBench using attributed, publisher-run benchmarks. Lumina did not rerun those evaluations.

ARC-AGI-2, GPQA Diamond and Mystery Game Puzzles, combined.

ExperimentalVerified 31 October 2026

Lumina Reasoning Index

LuminaBench
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All evidence tiers · score order · 20 of 250 models · best variant per model
03006009001,2001,168GPT-6 AstraMax1,160GPT-6.1 SolMax1,144GPT-6.1 TerraMax1,140Claude Opus 5.5Max1,136Claude Sonnet 5.5Max1,135Gemini 4 ArgonHigh1,124Claude Opus 5Max1,124GPT-5.6 SolMax1,120GPT-6 SolMax1,116GPT-5.5xHigh1,114Claude Fable 5.1Max1,111Muse WonderMax1,107Gemini 3.8 FlashHigh1,104Claude Fable 5Max1,103GPT-5.5 ProHigh1,103Gemini 3 Deep Think (2/26)1,100GPT-5.4 ProxHigh1,099DeepSeek V4.1 Flash 1017Max1,092Gemini 3.1 Pro (Preview)1,091GPT-5.5 Pre ReleasexHigh
Benchmark
Metric

Lumina Reasoning Index vs Cost per Task

Publisher-reported USD per task.

LuminaBench
All evidence tiers · score order · 15 of 95 families
$0.1$0.3$1$3$109001,0001,1001,200Cost per task · USD (log scale)Lumina Reasoning IndexGPT-6 AstraMaxGPT-6.1 SolMaxClaude Opus 5.5MaxGemini 4 ArgonHighGPT-5.4 ProxHighClaude Opus 5MaxGPT-5.6 SolMaxGPT-6 SolMaxGPT-5.5xHighGemini 3 Deep Think (2/26)Claude Fable 5.1MaxGemini 3.8 FlashHighClaude Fable 5Max

Method & coverage

Each benchmark contributes exactly one third. Converted source scores retain full precision until the final combined score is rounded. Matches require the same model release and explicit setting.

57 exact 3/3 configurations; 509 estimates in total: 12 supported and 497 lower-confidence provisional scores. All evidence tiers are enabled by default and ranked together by full-precision score. Display can exclude any tier; unknown settings remain unknown.

Validated same-release estimates are retained. New general three-source predictors did not beat the previous approach in provider-held-out testing and are not adopted. Weak proxies remain provisional and explicitly labelled. Hover information separates publisher standard errors from empirical prediction error ranges; neither establishes decisive order for small score gaps. Missing resource measurements are never estimated. Calibration: reasoning-estimation-v5.

Reasoning contributes to Expanded Capabilities. Method: reasoning-index-v3.