Write better prompts, get better results
Score AI prompts across seven research-backed dimensions using 100% deterministic linguistic analysis. No LLM in the loop, no latency, no cost per evaluation — grounded in the MePO and IFEval academic benchmarks.
Every prompt is scored independently across the dimensions that drive output quality — derived from peer-reviewed research, not vibes.
Same prompt, same score, every time.
No round-trip to a model provider — results in milliseconds.
Prompts are never sent to a third-party model. Zero server-side retention.
Built on the MePO framework and Google Research\'s IFEval.
Repeatable, defensible prompt evaluation grounded in linguistics and academic research — not another LLM grading another LLM.
Same prompt in, same score out — every time. No model drift, no run-to-run variance, no surprises in CI. Reproducible by construction.
No LLM in the loop. Scoring runs as deterministic linguistic analysis — pattern matching, regex heuristics, readability formulas, entity detection — and returns in milliseconds.
Your prompts are not sent to any third-party model provider, and they are not retained server-side. Zero retention, no training data leaks.
Built on the MePO framework (Zhu et al., arXiv:2505.09930, EACL 2026) for the seven merit dimensions, and on Google Research's IFEval for verifiable constraints.
We score our own work — IFEval's 541 prompts average 3.38/5 against Promptivo, with constraint verifiability and informational integrity flagged as the weakest spots. Numbers, not vibes.
Full support for 7 European languages, strong support for 7 more (including Greek, Russian, Arabic, Hebrew, Hindi, Thai), and structural support for CJK.
Generous free tier, no credit card. Paste a prompt, see the breakdown, take the advice.
Try Promptivo