Cosmos Software Factory Agent vs. Mastra Comparison


Cosmos Software Factory Agent Harness	Mastra Mastra AI	+	+
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About Harness Cosmos Software Factory Agent is a cloud-based AI agent platform for automating software engineering workflows from an issue or event through code changes and pull requests. Teams can configure agent workflows with specialized experts, execution environments, triggers, integrations, and human approval checkpoints. Workflows may start from ticket updates, pull requests, alerts, schedules, or webhooks; agents can investigate a task, plan a change, write code and tests, open a pull request, and respond to review feedback. A code context engine retrieves relevant information from a codebase, while sandboxed virtual machines provide an execution environment. Software engineering and platform teams can use Cosmos to coordinate agent-driven implementation, review, verification, and related development work, with shared organizational memory, workflow versioning, audit history, and controls for automation budgets.	About Mastra is an open-source TypeScript framework for building, deploying, and managing AI agents and intelligent applications. The platform provides tools for developing autonomous agents, orchestrating multistep workflows, managing persistent memory, and integrating large language models with external services. Its agent framework supports configurable instructions, tool calling, structured outputs, and connections to thousands of AI models through a unified model router. Developers can create durable workflows with conditional branches, retries, human approval steps, and the ability to pause and resume long-running tasks. Mastra also includes agent observability, performance evaluations, tracing, metrics, and debugging tools to help developers monitor and improve AI applications. The framework integrates with React, Next.js, Node.js, and other JavaScript environments, with options for standalone deployment, Mastra Cloud hosting, and enterprise infrastructure.
Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Software engineering and platform teams at organizations that build and maintain software, particularly teams coordinating agent-driven implementation, review, and verification workflows.	Audience AI developers, TypeScript and JavaScript developers, software engineers, autonomous agent developers, full-stack development teams, machine learning engineers, DevOps professionals, AI startups, enterprise engineering teams, and organizations seeking an open-source AI agent framework, workflow orchestration, persistent agent memory, multi-agent systems, LLM integrations, and production AI observability
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Not Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Not Supported
API Offers API Not Supported	API Offers API Not Supported
Screenshots and Videos No images available	Screenshots and Videos View more images or videos
Pricing $0 A free Harness platform tier includes access without module restrictions. Free Version Supported Free Trial Not Supported	Pricing Free Open source Free Version Supported Free Trial Not Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software

Training Documentation Not Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Harness Founded: 2017 United States www.harness.io/products/cosmos-software-factory-agent	Company Information Mastra AI Founded: 2024 United States mastra.ai/
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Categories AI Coding Agents Supported Software Factory Platforms Supported	Categories Agentic AI Supported Agentic Process Automation Supported AI Agent Builders Supported AI Agent Frameworks Supported AI Agents Supported AI Orchestration Supported Software Factory Platforms Supported

Integrations AG-UI Not Supported Alkemi Not Supported Apify Not Supported Cerebras Not Supported Claude Not Supported Claude Duet Not Supported Claude for Legal Not Supported Dock Not Supported Gemini Not Supported GitHub Supported Groq Not Supported JavaScript Not Supported Jira Supported Keenable Not Supported Llama Not Supported Prefactor Not Supported SerpKite Not Supported Slack Supported Span-01 Not Supported TypeScript Not Supported Show More Integrations View All 3 Integrations	Integrations AG-UI Supported Alkemi Supported Apify Supported Cerebras Supported Claude Supported Claude Duet Supported Claude for Legal Supported Dock Supported Gemini Supported GitHub Not Supported Groq Supported JavaScript Supported Jira Not Supported Keenable Supported Llama Supported Prefactor Supported SerpKite Supported Slack Not Supported Span-01 Supported TypeScript Supported Show More Integrations View All 26 Integrations
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