Cosmos Software Factory Agent vs. Tessl Comparison


Cosmos Software Factory Agent Harness	Tessl	+	+
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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 Tessl’s AI native development platform delivers secure, high-quality, and auto-maintained code, all built to your specs. Tessl’s approach to spec-driven development, grounded in rigorous, deterministic conformance tests, lets you define the requirements, while AI generates the code. Tessl’s platform is a new approach to building software. One built from the ground up with AI in mind. Software built with Tessl is composed using small, modular units that combine to form complex systems. Tessl is created to work with today’s LLMs while anticipating tomorrow’s AI innovations. With Tessl, quality control is built in, via spec conformance tests and platform-wide code quality evaluations. Push the boundaries of generative AI in an environment designed to let you tinker and explore. Experiment with workflows, models, prompts, and more. Tessl enables easier collaboration based on specs, and our high-quality, auto-generated documentation makes code easier than ever to consume.
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 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
Audience Software engineering and platform teams at organizations that build and maintain software, particularly teams coordinating agent-driven implementation, review, and verification workflows.	Audience Developers looking for a solution to manage and evaluate their code's quality
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 Supported
API Offers API Not Supported	API Offers API 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 No information available. Free Version Not 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 Supported
Company Information Harness Founded: 2017 United States www.harness.io/products/cosmos-software-factory-agent	Company Information Tessl Founded: 2024 United Kingdom www.tessl.io
Alternatives Blitzy	Alternatives Cosmos Software Factory Agent Harness
Devin Cognition AI	Markbase AltaCoda
8090 Software Factory 8090 Solutions	Kiro Amazon Web Services
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Categories AI Coding Agents Supported Software Factory Platforms Supported	Categories AI Code Generators Supported AI Coding Assistants Supported Code Quality Supported Software Factory Platforms Supported

Integrations Claude Haiku 3 Not Supported Claude Opus 3 Not Supported Claude Sonnet 3.5 Not Supported Claude Sonnet 3.7 Not Supported GPT-4o Not Supported GPT-4o mini Not Supported Gemini Not Supported Gemini 1.5 Flash Not Supported Gemini 1.5 Pro Not Supported Gemini 2.0 Not Supported Gemini 2.0 Flash Not Supported Gemini Nano Not Supported Gemini Pro Not Supported Google Sheets Not Supported HTML Not Supported JSON Not Supported Jira Supported Microsoft Excel Not Supported Slack Supported XML Not Supported Show More Integrations View All 3 Integrations	Integrations Claude Haiku 3 Supported Claude Opus 3 Supported Claude Sonnet 3.5 Supported Claude Sonnet 3.7 Supported GPT-4o Supported GPT-4o mini Supported Gemini Supported Gemini 1.5 Flash Supported Gemini 1.5 Pro Supported Gemini 2.0 Supported Gemini 2.0 Flash Supported Gemini Nano Supported Gemini Pro Supported Google Sheets Supported HTML Supported JSON Supported Jira Not Supported Microsoft Excel Supported Slack Not Supported XML Supported Show More Integrations View All 20 Integrations
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