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long context benchmark

RULER Leaderboard

RULER v1 is a synthetic long-context benchmark for measuring how model quality degrades as input length increases. This packaging follows the public standalone NVIDIA RULER implementation with 13 official tasks spanning retrieval, multi-hop tracing, aggregation, and QA.

Updated Aug 17, 2026

Models4
Model coverage4
MetricScore
EvidenceB

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RULER Ranking

Higher score ranks better on this benchmark.

4 rows
Columns

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Sort by
Rank
Model
Score
Percentile
Participants
Evidence
Evaluated
Rank01ModelNVNemotron 3 Ultra (550B A55B)NVIDIAScore94.7%Percentile100.0%Participants4EvidenceCEvaluatedAug 17, 2026
Rank02ModelNVNemotron 3 Super (120B A12B)NVIDIAScore91.8%Percentile66.7%Participants4EvidenceCEvaluatedAug 17, 2026
Rank03ModelMIPhi-3.5-MoE-instructMicrosoftScore87.1%Percentile33.3%Participants4EvidenceCEvaluatedAug 17, 2026
Rank04ModelMIPhi-3.5-mini-instructMicrosoftScore84.1%Percentile0.0%Participants4EvidenceCEvaluatedAug 17, 2026

RULER Highlights

The leading models and scores on this benchmark.

Rank #1Nemotron 3 Ultra (550B A55B)94.7%Rank #2Nemotron 3 Super (120B A12B)91.8%Rank #3Phi-3.5-MoE-instruct87.1%Rank #4Phi-3.5-mini-instruct84.1%

RULER Score Distribution

A closer view of the leading scores on this benchmark.

RULER

The Top AI Models for RULER

The first five results on this benchmark, with official price and output speed added where the model identity can be matched.

Ranking basisThis ruler AI model leaderboard uses descending score in the benchmark's original unit. The leaderboard ranking keeps matched price and speed data separate from benchmark evidence.

  1. 01
    NV
    Nemotron 3 Ultra (550B A55B)NVIDIA
    Score
    94.7%
    Price
    $0.50 input / $2.5 output per 1M tokens

    Strengths

    • Ranks #1 of 4 compared models
    • 100th percentile on this benchmark
    • C evidence result

    Considerations

    • This result measures RULER, not total model capability
  2. 02
    NV
    Nemotron 3 Super (120B A12B)NVIDIA
    Score
    91.8%
    Price
    $0.20 input / $0.80 output per 1M tokens

    Strengths

    • Ranks #2 of 4 compared models
    • 67th percentile on this benchmark
    • C evidence result

    Considerations

    • This result measures RULER, not total model capability
  3. 03
    MI
    Phi-3.5-MoE-instructMicrosoft
    Score
    87.1%

    Strengths

    • Ranks #3 of 4 compared models
    • 33th percentile on this benchmark
    • C evidence result

    Considerations

    • This result measures RULER, not total model capability
  4. 04
    MI
    Phi-3.5-mini-instructMicrosoft
    Score
    84.1%
    Speed
    Up to 23 tok/s via Azure

    Strengths

    • Ranks #4 of 4 compared models
    • 0th percentile on this benchmark
    • C evidence result

    Considerations

    • This result measures RULER, not total model capability

Selection summary

Best AI Models for RULER

Nemotron 3 Ultra (550B A55B) currently leads RULER with 94.7%. It is the top model on this specific benchmark, while the best LLM for the broader task should also be checked against other benchmarks, price and runtime.

Use this leaderboard with the supporting benchmark results and coverage details above. A leaderboard position summarizes the selected ranking signal; it does not replace workload-specific testing.

Benchmark rank #1Nemotron 3 Ultra (550B A55B)94.7% · $0.50 input / $2.5 output per 1M tokensBenchmark rank #2Nemotron 3 Super (120B A12B)91.8% · $0.20 input / $0.80 output per 1M tokensBenchmark rank #3Phi-3.5-MoE-instruct87.1%

What is RULER?

What RULER measures and how its scores work.

RULER v1 is a synthetic long-context benchmark for measuring how model quality degrades as input length increases. This packaging follows the public standalone NVIDIA RULER implementation with 13 official tasks spanning retrieval, multi-hop tracing, aggregation, and QA.

Scores are shown in ratio. This benchmark is not independently verified and has an evidence level of B.

Family
RULER
Modality
text
Primary category
long context
Score direction
higher
LLMBoard eligible
Yes
Evaluation key
ruler|llm-stats-current

Benchmark scores retain their original unit. Overall score eligibility is shown separately.

FAQ

Common questions about RULER.

Which model scores highest on RULER?

Nemotron 3 Ultra (550B A55B) is currently ranked first with 94.7%.

What does RULER measure?

RULER v1 is a synthetic long-context benchmark for measuring how model quality degrades as input length increases. This packaging follows the public standalone NVIDIA RULER implementation with 13 official tasks spanning retrieval, multi-hop tracing, aggregation, and QA.

Is a higher score better?

Yes. Higher values rank better for this benchmark.

How many models are compared?

4 model results are currently shown.

Does this benchmark affect the overall score?

Yes. This benchmark can contribute to the current LLMBoard capability score.