PromptEval

6.8easy start · #13 of 29
in AI Prompt Generators

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you worknot on record

Runs on api, Web. Paid plans from $9/mo.

PromptEval is ranked #13 of 29 in AI prompt generators on The Geeks Club. It runs on API, Web. There is a free plan. Paid plans start at $9/mo.

PromptEval plans and pricing

All plans

Free Free forever 3 web evals/month · API lint 10/month · library up to 5 prompts · prompts up to 8,000 characters prompt-eval.com · 30 Sept 2026

Basic $9/mo $9/month 30 credits/month · API lint 30/month · prompts up to 12,000 characters prompt-eval.com · 30 Sept 2026

Pro $19/mo $19/month Unlimited web usage · API lint 75/month · prompts up to 35,000 characters prompt-eval.com · 30 Sept 2026

Team Not published Custom API lint 250/month · prompts up to 60,000 characters · priority support within 24h prompt-eval.com · 30 Sept 2026

Compared on AI prompt generators

Free plan: Yes
Paid from: $9/mo
Model support: single
Optimization mode: assisted
Prompt testing: Yes
Team collaboration: Yes
API access: Yes

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The record

Product purpose: PromptEval evaluates and optimizes prompts for large language models as a SaaS platform.
Scoring: It provides a reproducible 0–100 score with diagnostics across clarity, specificity, structure, and robustness.
Prompt analysis: The evaluator returns critical issues, warnings, strengths, and surgical recommendations for prompt improvements.
Optimization: The token optimizer compresses prompts while preserving intent and reports the percentage reduction.
Versioning: The versioned library stores prompt versions with score history and diffs.
A/B testing: The A/B Playground tests two prompts with a user-provided API key across up to seven criteria and displays radar-chart results.
CI integration: The official GitHub Action can fail a pull request when a score drops, a contradiction appears, or a prompt regresses against production.
Production serving: Pro and Team users can serve a production prompt by slug through GET /api/v1/prompts/{slug} without redeploying, with changes taking effect in about 60 seconds.
API limits: The Eval API has managed monthly quotas of 10, 30, 75, and 250 calls for Free, Basic, Pro, and Team, respectively, with a 5-requests-per-minute rate limit.
BYOK: An Anthropic key supplied through X-Provider-Key runs inference on the user's key, consumes no managed quota, and unlocks full mode on every plan.
Privacy and security: PromptEval says prompts are discarded after evaluation, never used to train AI models, protected by Row Level Security, and transmitted over HTTPS.
Support: The Team plan includes priority support with a stated 24-hour response target.
Target users: The product is positioned for solo developers, developers using AI at work, developers shipping prompts to production, and teams governing production prompts.
Price from: $9/mo

Where it ranks on The Geeks Club

Best AI Prompt Generators in 2026#13 of 29

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Sources

prompt-eval.com/en/terms· checked 30 Sept 2026
prompt-eval.com/en/about· checked 30 Sept 2026
prompt-eval.com/en· checked 30 Sept 2026
prompt-eval.com/en/pricing· checked 30 Sept 2026
prompt-eval.com/docs/api· checked 30 Sept 2026
prompt-eval.com/privacy· checked 30 Sept 2026