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Designs, tests, and version-controls LLM prompts for production apps. Monitors token costs, tracks latency, and runs automated evaluations to ensure AI features remain reliable at scale.
Enterprise Prompt Engineer
Each stage transforms your work — output of one feeds the next.
Input
A new feature request requiring a complex system prompt
AI process
Provides AI-generated baseline prompts and versions iterations chronologically to track structural improvements.
Output
A documented baseline prompt ready for rigorous testing
Input
A documented baseline prompt ready for rigorous testing
AI process
Evaluates prompt outputs across multiple LLMs simultaneously and uses semantic scoring to grade response quality.
Output
The highest-performing prompt version selected for release
Input
The highest-performing prompt version selected for release
AI process
Uses LLM-as-a-judge capabilities to score new prompt outputs against baseline assertions and expected behaviors.
Output
A quantitative pass/fail report for the prompt update
Input
A quantitative pass/fail report for the prompt update
AI process
Analyzes AI execution traces to isolate hallucinated responses and calculate precise token expenditure per call.
Output
Dashboards identifying specific prompts that need optimization
PromptBase for sources proven prompt structures for common ai tasks·PromptLayer for maintains a searchable visual registry of prompt history
Marketplace for buying and selling DALL-E, GPT, and Midjourney prompts.
Pay per prompt (usually $1.99 - $4.99)
Platform for prompt management, tracking, and collaboration for LLMs.
Free up to 10k requests/mo, paid plans scale with usage
Vellum for a/b tests prompts across multiple model providers·Humanloop for gathers user feedback to fine-tune production prompts
Developer platform to experiment with, evaluate, and deploy LLM prompts.
Starts around $99/mo depending on usage
Enterprise platform for prompt engineering, evaluation, and fine-tuning.
Custom enterprise pricing based on volume
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Promptfoo for runs automated ci/cd tests to catch prompt regressions·Agenta for builds and evaluates llm apps without writing boilerplate
Open-source CLI and library for evaluating LLM prompts and models.
100% Free and open-source
Open-source end-to-end platform for prompt engineering and evaluation.
Free open-source version, Cloud plans start at $39/mo
Helicone for monitors api token usage, costs, and request latency·LangSmith for debugs execution traces in complex langchain pipelines
Open-source LLM observability platform with prompt tracking.
Free up to 100k requests/mo, Pro at $50/mo
Platform for debugging, testing, and evaluating LLM applications.
Free developer tier, paid tiers for teams
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