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OpenReasoning Nemotron 32B

Added Aug 21, 2025Open weights

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OpenReasoning-Nemotron-32B is a reasoning model derived from Qwen2.5-32B-Instruct, post-trained for math, science, and code solution generation. Evaluated with up to 64K output tokens. Available in multiple sizes: 1.5B, 7B, 14B, and 32B.

  • Reasoning
Input
Text
Output
Text
Discovery tier
Open weights

Pricing

USD per 1M tokens
Input
$0.10
Output
$0.40

Reference prices as published by the model provider. API example

Specifications

Context window
32.8K
Max output
—

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OpenReasoning Nemotron 32B compared

Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.

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OpenReasoning Nemotron 32BnvidiaThis modelNvidia Nemotron 3.5 Lightning ThinkingnvidiaRemove
Providernvidianvidia
Discovery tierOpen weightsOpen weights
AddedAug 21, 2025Aug 12, 2026
Limits
Context window32.77K1MBest
Max output—65.54K
Average output—6.1K tokens
Pricing, USD per 1M tokens
Input$0.10$0.05Best
Output$0.40$0.20Best
Cache read—$0.01
Benchmark indexes
Intelligence Index—12.9
Coding Index—26.8
Capabilities
ReasoningYesYes
ToolsNoYes
Parallel toolsNoYes
Reasoning effort—none, high

Public evaluations

Benchmarks

Independent evaluation results, with how each score ranks among the models in the Noumen catalog.

  • OpenReasoning Nemotron 32B
  • Nvidia Nemotron 3.5 Lightning Thinking

Intelligence Index

  • OpenReasoning Nemotron 32B—
  • Nvidia Nemotron 3.5 Lightning Thinking12.9
3.8Catalog models by score55.1

Indexes

  • Coding Index

    Composite of the coding evaluations

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 26.8

Agentic work

  • AutomationBench-AA

    Workflow automation, penalized for guardrail violations

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 0.8%

  • AutomationBench-AA tasks completed

    Workflows finished end to end without a guardrail violation

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 0.0%

  • AA-Briefcasev1.1

    Agentic knowledge work, rated head to head

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 506 Elo

  • GDPval-AAv2.1

    Economically valuable occupational tasks, rated head to head

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 638 Elo

Document reasoning

  • GDP.pdf

    Professional reasoning over PDF documents, all-pass rate

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 3.0%

  • AA-LCRv1.1

    Reasoning across long documents

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 60.3%

  • MLCR-AA

    Long-context reasoning over medical records

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 2.2%

Reasoning and knowledge

  • Humanity’s Last Exam

    Expert-level questions across academic fields

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 10.6%

  • GPQA Diamond

    Graduate-level science questions

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 74.3%

Coding

  • Terminal-Benchv4.0

    Practical software engineering in a terminal

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 0.5%

  • SciCode

    Scientific computing in Python

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 32.1%

Legacy evaluations

  • AA-LCR (unversioned)

    Long-context reasoning, earlier grading

    • OpenReasoning Nemotron 32B: —
    • Nvidia Nemotron 3.5 Lightning Thinking: 60.3%

Scores from Artificial Analysis, updated Oct 26, 2026. Artificial Analysis

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart
curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "pamanseau/OpenReasoning-Nemotron-32B",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'
import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="pamanseau/OpenReasoning-Nemotron-32B",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

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