Latitude

Short Intro: Latitude (latitude.so) is an open-source agent engineering platform founded in 2022 by César Miguelañez and Gerard Clos under the legal entity Latitude Data S.L. The platform began as a prompt management and evaluation tool before pivoting in 2025 toward agent-native observability — tracing multi-turn sessions, tool calls, and subagent activity in production. The platform is available as a managed cloud service and as a fully self-hosted deployment, with $1.32M in seed funding from CB Insights.

Key Capabilities:

• Multi-turn agent tracing with full system prompt, tool call, and subagent visibility per session

• PromptL, a proprietary prompt language with variables, conditionals, and loops for dynamic prompt logic

• GEPA (Generative Evaluation from Production Annotations), which auto-generates evaluations from annotated production failures

• Issue lifecycle tracking from active through in-progress, resolved, and regressed states

• LLM-as-judge, programmatic, and human review evaluation with batch experiment support

• AI gateway that deploys prompts as live API endpoints updated on each publish

• AI coding agent skills for Claude Code, Cursor, and Codex to add tracing in one command

• Cloud-hosted and self-hosted deployment options under a fully open-source license

See Latitude Pricing Details →