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GPT-5.1 Codex vs Nemotron Labs Dory 1.0 (4B)

GPT-5.1 Codex leads the LLM Stats Score 29.4 to 21.8.

OpenAI · NVIDIA · Updated for 2026

Which is better?

GPT-5.1 Codex leads the overall LLM Stats Score 29.4 to 21.8, ranking #150 overall.

In the 1 individual benchmarks reported for both models, GPT-5.1 Codex 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 GPT-5.1 Codex

  • overall performance matters — it scores 29.4 and ranks #150 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results

Choose Nemotron Labs Dory 1.0 (4B)

  • you want the most recent training data — it shipped Oct 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

GPT-5.1 Codex
OpenAI
Nemotron Labs Dory 1.0 (4B)
NVIDIA
Core performance indexes
LLM Stats Score
29.4
#150
21.8
#203
Reasoning
29.5
#144
19.6
#216
Coding
20.9
#109
2.8
#244
Agents
10.4
#138
-1.8
#203
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$1.25 / M
— / M
Output price
$10.00 / M
— / M
Context window
400,000
—

Individual benchmarks

3 reported for GPT-5.1 Codex · 10 for Nemotron Labs Dory 1.0 (4B)

1 shared

GPT-5.1 Codex outperforms in 1 benchmarks (SWE-Bench Verified), while Nemotron Labs Dory 1.0 (4B) is better at 0 benchmarks.

GPT-5.1 Codex significantly outperforms across most benchmarks.

Fri Oct 23 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only GPT-5.1 Codex specifies input context (400,000 tokens). Only GPT-5.1 Codex specifies output context (128,000 tokens).

OpenAI
GPT-5.1 Codex
Input400,000 tokens
Output128,000 tokens
NVIDIA
Nemotron Labs Dory 1.0 (4B)
Input- tokens
Output- tokens
Fri Oct 23 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

GPT-5.1 Codex supports multimodal inputs, whereas Nemotron Labs Dory 1.0 (4B) does not.

GPT-5.1 Codex can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5.1 Codex

Text
Images
Audio
Video

Nemotron Labs Dory 1.0 (4B)

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.1 Codex is licensed under a proprietary license, while Nemotron Labs Dory 1.0 (4B) uses OpenMDW License v1.1.

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

GPT-5.1 Codex

Proprietary

Closed source

Nemotron Labs Dory 1.0 (4B)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

GPT-5.1 Codex was released on 2025-11-19, while Nemotron Labs Dory 1.0 (4B) was released on 2026-10-16.

Nemotron Labs Dory 1.0 (4B) is 11 months newer than GPT-5.1 Codex.

GPT-5.1 Codex

Nov 19, 2025

11 months ago

Nemotron Labs Dory 1.0 (4B)

Oct 16, 2026

3 days ago

11mo newer

Knowledge Cutoff

When training data ends

GPT-5.1 Codex has a documented knowledge cutoff of 2024-09-30, while Nemotron Labs Dory 1.0 (4B)'s cutoff date is not specified.

We can confirm GPT-5.1 Codex's training data extends to 2024-09-30, but cannot make a direct comparison without Nemotron Labs Dory 1.0 (4B)'s cutoff date.

GPT-5.1 Codex

Sep 2024

Nemotron Labs Dory 1.0 (4B)

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-5.1 Codex and Nemotron Labs Dory 1.0 (4B) side-by-side, then vote on the output you prefer.

GPT-5.1 Codex
✓ Preferred
Nemotron Labs Dory 1.0 (4B)
Open in Playground

FAQ

Common questions about GPT-5.1 Codex vs Nemotron Labs Dory 1.0 (4B).

Which is better, GPT-5.1 Codex or Nemotron Labs Dory 1.0 (4B)?

GPT-5.1 Codex leads the LLM Stats Score 29.4 to 21.8. GPT-5.1 Codex is made by OpenAI and Nemotron Labs Dory 1.0 (4B) is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-5.1 Codex compare to Nemotron Labs Dory 1.0 (4B) in benchmarks?

GPT-5.1 Codex scores SWE-Bench Verified: 73.7%, SWE-Lancer: 66.3%, Terminal-Bench 2.0: 52.8%. Nemotron Labs Dory 1.0 (4B) scores IFBench: 77.9%, GPQA: 72.4%, AA-LCR: 71.0%, SWE-Bench Verified: 59.5%, SciCode: 34.9%.

What are the context window sizes for GPT-5.1 Codex and Nemotron Labs Dory 1.0 (4B)?

GPT-5.1 Codex supports 400K tokens and Nemotron Labs Dory 1.0 (4B) supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.1 Codex and Nemotron Labs Dory 1.0 (4B)?

Key differences include LLM Stats Score (29.4 vs 21.8), multimodal support (yes vs no), licensing (Proprietary vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.1 Codex and Nemotron Labs Dory 1.0 (4B)?

GPT-5.1 Codex is developed by OpenAI and Nemotron Labs Dory 1.0 (4B) is developed by NVIDIA.

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