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Nemotron 3.5 Bolt (74B A9B 24GB) vs Step-3.5-Flash

Step-3.5-Flash leads the LLM Stats Score 37.0 to 29.9.

NVIDIA · StepFun · Updated for 2026

Which is better?

Step-3.5-Flash leads the overall LLM Stats Score 37.0 to 29.9, ranking #86 overall.

In the 1 individual benchmarks reported for both models, Step-3.5-Flash wins 1; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Nemotron 3.5 Bolt (74B A9B 24GB)

  • you want the most recent training data — it shipped Oct 2026

Choose Step-3.5-Flash

  • overall performance matters — it scores 37.0 and ranks #86 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results

At a glance

The differences that matter most.

Nemotron 3.5 Bolt (74B A9B 24GB)
NVIDIA
Step-3.5-Flash
StepFun
Core performance indexes
LLM Stats Score
29.9
#142
37.0
#86
Reasoning
29.2
#143
37.0
#86
Coding
14.8
#151
20.5
#113
Agents
12.4
#124
15.4
#106
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
— / M
$0.10 / M
Output price
— / M
$0.40 / M
Context window
—
65,536

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Nemotron 3.5 Bolt (74B A9B 24GB)
Step-3.5-Flash
Math
23.6#135
33.9#53
Tool use
5.6#168
13.3#115
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

10 reported for Nemotron 3.5 Bolt (74B A9B 24GB) · 7 for Step-3.5-Flash

1 shared

Nemotron 3.5 Bolt (74B A9B 24GB) outperforms in 0 benchmarks, while Step-3.5-Flash is better at 1 benchmark (BrowseComp).

Step-3.5-Flash significantly outperforms across most benchmarks.

Mon Oct 19 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

122.0B diff

Step-3.5-Flash has 122.0B more parameters than Nemotron 3.5 Bolt (74B A9B 24GB), making it 164.9% larger.

NVIDIA
Nemotron 3.5 Bolt (74B A9B 24GB)
74.0Bparameters
StepFun
Step-3.5-Flash
196.0Bparameters
74.0B
Nemotron 3.5 Bolt (74B A9B 24GB)
196.0B
Step-3.5-Flash

Context Window

Maximum input and output token capacity

Only Step-3.5-Flash specifies input context (65,536 tokens). Only Step-3.5-Flash specifies output context (8,192 tokens).

NVIDIA
Nemotron 3.5 Bolt (74B A9B 24GB)
Input- tokens
Output- tokens
StepFun
Step-3.5-Flash
Input65,536 tokens
Output8,192 tokens
Mon Oct 19 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Nemotron 3.5 Bolt (74B A9B 24GB) supports multimodal inputs, whereas Step-3.5-Flash does not.

Nemotron 3.5 Bolt (74B A9B 24GB) can handle both text and other forms of data like images, making it suitable for multimodal applications.

Nemotron 3.5 Bolt (74B A9B 24GB)

Text
Images
Audio
Video

Step-3.5-Flash

Text
Images
Audio
Video

License

Usage and distribution terms

Nemotron 3.5 Bolt (74B A9B 24GB) is licensed under OpenMDW License v1.1, while Step-3.5-Flash uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Nemotron 3.5 Bolt (74B A9B 24GB)

OpenMDW License v1.1

Open weights

Step-3.5-Flash

Apache 2.0

Open weights

Release Timeline

When each model was launched

Nemotron 3.5 Bolt (74B A9B 24GB) was released on 2026-10-15, while Step-3.5-Flash was released on 2026-02-02.

Nemotron 3.5 Bolt (74B A9B 24GB) is 9 months newer than Step-3.5-Flash.

Nemotron 3.5 Bolt (74B A9B 24GB)

Oct 15, 2026

4 days ago

8mo newer
Step-3.5-Flash

Feb 2, 2026

8 months ago

Knowledge Cutoff

When training data ends

Nemotron 3.5 Bolt (74B A9B 24GB) has a documented knowledge cutoff of 2026-05-01, while Step-3.5-Flash's cutoff date is not specified.

We can confirm Nemotron 3.5 Bolt (74B A9B 24GB)'s training data extends to 2026-05-01, but cannot make a direct comparison without Step-3.5-Flash's cutoff date.

Nemotron 3.5 Bolt (74B A9B 24GB)

May 2026

Step-3.5-Flash

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Nemotron 3.5 Bolt (74B A9B 24GB) and Step-3.5-Flash side-by-side, then vote on the output you prefer.

Nemotron 3.5 Bolt (74B A9B 24GB)
✓ Preferred
Step-3.5-Flash
Open in Playground

FAQ

Common questions about Nemotron 3.5 Bolt (74B A9B 24GB) vs Step-3.5-Flash.

Which is better, Nemotron 3.5 Bolt (74B A9B 24GB) or Step-3.5-Flash?

Step-3.5-Flash leads the LLM Stats Score 37.0 to 29.9. Nemotron 3.5 Bolt (74B A9B 24GB) is made by NVIDIA and Step-3.5-Flash is made by StepFun. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Nemotron 3.5 Bolt (74B A9B 24GB) compare to Step-3.5-Flash in benchmarks?

Nemotron 3.5 Bolt (74B A9B 24GB) scores PinchBench: 87.8%, GPQA: 86.4%, BrowseComp: 66.8%, AA-LCR: 64.1%, MCP Atlas: 52.2%. Step-3.5-Flash scores AIME 2025: 97.3%, Tau-bench: 88.2%, LiveCodeBench v6: 86.4%, IMO-AnswerBench: 85.4%, SWE-Bench Verified: 74.4%.

What are the context window sizes for Nemotron 3.5 Bolt (74B A9B 24GB) and Step-3.5-Flash?

Nemotron 3.5 Bolt (74B A9B 24GB) supports an unknown number of tokens and Step-3.5-Flash supports 66K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Nemotron 3.5 Bolt (74B A9B 24GB) and Step-3.5-Flash?

Key differences include LLM Stats Score (29.9 vs 37.0), multimodal support (yes vs no), licensing (OpenMDW License v1.1 vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Nemotron 3.5 Bolt (74B A9B 24GB) and Step-3.5-Flash?

Nemotron 3.5 Bolt (74B A9B 24GB) is developed by NVIDIA and Step-3.5-Flash is developed by StepFun.

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