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Paid tool

Latitude

Open-source LLM development platform for prompt engineering, evaluation, and deployment.

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Intro

What is Latitude?

Latitude is an open-source LLM development platform and data workspace designed for product teams to streamline their prompt engineering and AI workflows. Originating as a prominent Spain startup, Latitude.so acts as an end-to-end AI engineering platform where domain experts and developers can collaborate to build better AI products. It serves as an excellent PromptLayer alternative for teams looking for open source software to help polish prompts for AI tasks, manage versions, and execute complex LLM training pipelines. The platform enables teams to design, evaluate, and refine their system prompts using real data, making it easier to manage everything from a simple prompt length checker to advanced programmatic rule evaluations.

Latitude at a glance
Free Hobby tier available57K monthly visitsPaid access

Category

Large Language Models (LLMs)Prompt Engineering
Best For

Best Latitude use cases by task, role, industry, and platform

These use cases show where Latitude fits best, ranked by fit score before popularity or pricing.

Prompt EngineeringPrompt engineering helps teams prepare source notes, context details, review comments, and task requirements into practical review notes.98LLM EvaluationAssess model outputs, benchmark performance metrics, test prompts, and validate responses to ensure accuracy across specific use cases.95Model EvaluationAssess model performance, compare benchmark metrics, test specific prompts, and analyze output accuracy across different datasets.85LLM GatewayRoute API requests, manage API keys, track costs, and switch between different language models through a single unified interface.80AI PrototypingBuild, test, and refine interactive product concepts, wireframes, and functional mockups rapidly during early development stages.75AI Training DataCollect, clean, label, and format diverse datasets to train machine learning models for specific business use cases.70
Pricing

Latitude Pricing Plans

Compare Latitude free options, Latitude paid pricing plans, and usage notes before you choose the best way to use this AI tool in 2026.

Free Hobby tier available

Free

Includes up to 40k prompt and evaluation runs every month for free

Pricing updated:Jun 12, 2026

Features

Latitude AI Features

Prompt Manager: Design, test, and version control your prompts at scale before production.Evaluations: Run LLM-as-judge, rule-based filters, or human-in-the-loop evaluations on generated logs.Dataset Manager: Create and maintain high-quality labeled golden datasets for regression testing or fine-tuning.Observability & Logging: Automatically log and debug all requests to optimize your LLM inference pipeline.
Pros & Cons

Latitude Pros and Cons

Pros

  • Open-source platform offering flexible deployment and workspace control
  • Comprehensive end-to-end workflow from design to observability
  • Generous free tier supporting up to 40k prompt and evaluation runs per month
  • Enables collaboration between non-technical domain experts and engineers

Limitations

  • May require technical setup for advanced SDK integrations and self-hosting
  • Advanced enterprise features and dedicated support require tier upgrades

Latitude FAQ

Latitude is an open-source platform, allowing you to self-host and manage your prompts. They also provide a managed cloud version with a generous Hobby tier.

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