# Sonatype Nexus Repository vs Amazon ECR: which do AI models recommend for artifact registries, October 2026

IT AI Recommendation Index, October 2026 Edition, Artifact and container registries. Five of fourteen models named Sonatype Nexus Repository first on the direct prompt; zero named Amazon ECR. Page: https://it-ai-index.com/developer/artifact-and-container-registries/sonatype-nexus-repository-vs-amazon-ecr/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Sonatype Nexus Repository | 11% | #2 of 16 | 5% | 20 | 11 of 14 |
| Amazon ECR | 8% | #5 of 16 | 0% | 12 | 8 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: sonatype nexus repository first (first choices: Sonatype Nexus Repository) (alternatives: AWS CodeArtifact, JFrog Artifactory)
- DeepSeek V4 Flash: sonatype nexus repository first (first choices: Sonatype Nexus Repository) (alternatives: Azure Artifacts, Cloudsmith)
- GLM 4.7 FlashX: sonatype nexus repository first (first choices: Sonatype Nexus Repository) (alternatives: Cloudsmith, Harbor, JFrog Artifactory)
- MiniMax M2.5: sonatype nexus repository first (first choices: Sonatype Nexus Repository) (alternatives: AWS CodeArtifact, Cloudsmith, JFrog Artifactory)
- Muse Glimmer 30B: sonatype nexus repository first (first choices: Sonatype Nexus Repository) (alternatives: CloudRepo, Cloudsmith, JFrog Artifactory)
- Perplexity Sonar: neither first, one named (first choices: JFrog Artifactory) (alternatives: Cloudsmith, Sonatype Nexus Repository)
- Kimi K2: neither first, one named (first choices: GitHub Packages) (alternatives: AWS CodeArtifact, Azure Artifacts, Sonatype Nexus Repository)
- GPT-6 Luna: neither first, one named (first choices: Cloudsmith) (alternatives: AWS CodeArtifact, JFrog Artifactory, Sonatype Nexus Repository)
- Claude Haiku 4.5: neither named
- Gemini 3.5 Flash: neither named (first choices: Cloudsmith) (alternatives: AWS CodeArtifact, Azure Artifacts, GitLab Package Registry, Google Artifact Registry, Sonatype Lifecycle)
- Grok 4.1 Fast: neither named (first choices: Cloudsmith) (alternatives: AWS CodeArtifact)
- Mistral Small: neither named (first choices: Cloudsmith) (alternatives: AWS, Google Cloud, Packagecloud)
- Llama 4 Maverick: neither named (first choices: Cloudsmith) (alternatives: Packagecloud)
- Qwen 3.7 Flash: neither named (first choices: JFrog Artifactory) (alternatives: AWS CodeArtifact, Azure Artifacts, Sonatype Lifecycle)

## What the models said about Sonatype Nexus Repository

- "Limited integrations vs. leaders; self-host adds ops overhead." (Grok 4.1 Fast, direct prompt, soft negative)
- "Enterprise-grade artifact repository manager that allows development teams to store, organize, and distribute software components... Both are viable for a 500-person company." (Muse Glimmer 30B, scale prompt, first choice)
- "the best artifact repository for a company with a limited budget is Sonatype Nexus Repository (Community Edition)" (GLM 4.7 FlashX, budget prompt, first choice)
- "For most mid-market B2B companies, Sonatype Nexus Repository Pro is the strongest all-around recommendation" (DeepSeek V4 Flash, direct prompt, first choice)

## What the models said about Amazon ECR

- "If you want a single default recommendation without more context, I'd lean toward Amazon ECR for a mid-sized B2B company" (GPT-5.4 mini, paraphrase prompt, first choice)
- "AWS Elastic Container Registry (ECR) is the obvious choice if you're running on AWS" (Claude Haiku 4.5, paraphrase prompt, first choice)
- "For most mid-sized B2B companies, I'd start with Amazon ECR if you're on AWS" (GLM 4.7 FlashX, paraphrase prompt, first choice)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.