SysBench: system message following (SysBench)
We show this table for reference; we do not rank on it.
Tests how well a model follows the rules in a system message across single and multi-turn conversations.
Benchmark score on SysBench — October 29, 2026
We compile the SysBench rows from provider self-reports. The table contains 2 models. Nemotron 3.5 Bolt E4B BF16 has the highest published score at 67.88%, but the available coverage and evaluation setups do not establish a market leader. We do not use these results to rank models overall.
Nemotron 3.5 Bolt E4B BF16
NVIDIA
Nemotron 3.5 Bolt E4B
NVIDIA
2 modelsInstruction FollowingRefreshingDisplay onlyUpdated October 29, 2026
Benchmark score table (2 models)
| Rank | Model / configuration | Score | Parameters (B) | Open / closed |
|---|---|---|---|---|
| 1 | Nemotron 3.5 Bolt E4B BF16NVIDIA | 67.88% | Not reported | Open |
| 2 | Nemotron 3.5 Bolt E4BNVIDIA | 67.22% | Not reported | Open |
How to read this leaderboard
Operator receipt: 2 sourced rows are currently displayable on this page; the highest published score among these 2 models is Nemotron 3.5 Bolt E4B BF16 at 67.88%, which does not establish a market leader.
Honest limit: Only NVIDIA-run results are stored so far, from one harness. Display-only and excluded from weighted ranking.
About SysBench
Year
2024
Tasks
System-message constraints over conversations
Format
Instruction success rate
Difficulty
Keeping long prompt rules
NVIDIA reports it for Nemotron 3.5 Bolt E4B (October 23, 2026), run in its NeMo Gym harness, as the instruction success rate in reasoning mode.
Freshness and provenance
Version
SysBench 2024
Refresh cadence
Annual
Staleness state
Refreshing
Question availability
Public benchmark set
BenchLM uses freshness metadata to decide whether a benchmark should still be treated as a strong differentiator, a benchmark to watch, or a display-only reference. For the full scoring policy, see the BenchLM methodology page.
Questions
What does SysBench measure?
Tests how well a model follows the rules in a system message across single and multi-turn conversations.
Which model scores highest on SysBench?
Nemotron 3.5 Bolt E4B BF16 by NVIDIA currently leads with a score of 67.88% on SysBench.
How many models are evaluated on SysBench?
2 AI models have published results on SysBench in the BenchLM catalog.
Compare top models on SysBench
Know when it’s worth switching models
The model to choose, the cheaper alternative, and the release we would wait on.
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