Skip to content
Donate
Start hereStart learning
Learn
Go to LearnCoursesGuidesAI TutorPrompt libraryQuizzesCertificationGlossary
News
Go to NewsLatest AI newsTopic trackersResearch & datasetsBlogEditorial standardsCorrections
Tools
Go to ToolsTool directoryBest-of listsCompare toolsCost calculatorPrompt RefinerSubmit AI Tool
Jobs
Go to JobsBrowse AI jobsPost a jobSponsor AIU
Mission
Go to MissionMissionImpact & statsAuthorsHelp centreWhat's newSupport
Donate
Home/Glossary/Frequency Penalty
AI Glossary Term

What does “Frequency Penalty” mean?

Definition

A decoding setting that reduces the probability of tokens proportionally to how often they've appeared so far.

Related terms

Presence Penalty
A decoding setting that reduces the probability of tokens that have appeared at all, encouraging new topics.
Repetition Penalty
A decoding setting that lowers the probability of tokens the model has already produced to reduce loops.
Perplexity
A language-model metric measuring how surprised the model is by true next tokens.
Top-k Sampling
A decoding strategy that samples only from the k most likely next tokens.
Guarded Decoding
A generation strategy that constrains output tokens to valid structures or policy-compliant choices.
Speculative Decoding
An inference acceleration method where a small draft model proposes tokens that a larger model verifies in parallel.

Learn more in our free guides

Repetition Penalty and Decoding ControlsMel-Frequency Cepstral Coefficients

See also

Beam SearchParent-Document RetrievalMulti-Query RetrievalRAG-FusionSelf-PlayPost-trainingMid-trainingWatermarking
PreviousRepetition PenaltyNextPresence Penalty
Browse the full AI GlossaryExplore all free AI guides
Newsletter

A little clarity. In your inbox.

The week's most useful AI news, tools, learning picks, and opportunities. Clear signal, no spam.

No spam. Unsubscribe in one click. Privacy Policy

AI Understanding

AI Education kept free. A 501(c)(3) nonprofit teaching the public how AI actually works - and how to use it well.

Read our mission↗
501(c)(3) public charity

EIN 41-3273048

Learn

  • Courses
  • All Guides
  • What is AI
  • ChatGPT & LLMs
  • Prompt Engineering
  • Generative AI
  • AI Image Gen
  • AI Ethics
  • Future of AI
  • Glossary
  • Quizzes
  • Certification

Resources

  • News
  • Blog
  • Newsletter
  • AI Tools Directory
  • Comparisons
  • AI Cost Calculator
  • Prompt Library
  • AI Jobs Board
  • AI Statistics
  • Research & datasets
  • Submit Tool

Organization

  • Mission
  • Editorial Standards
  • Corrections
  • Sponsor
  • Donate
  • Help Centre
  • What's New
  • Contact
  • Report an Issue

Legal

  • Security
  • Privacy Policy
  • Cookie Policy
  • Terms of Use
  • Disclosure
  • Donor Policy
  • All legal pages
  • Sitemap

Account

  • Sign In
  • Sign Up
  • Submit a Tool
Independent. Open. For everyone.

Keep AI education free and open

Support the mission

© 2026 AI Understanding. All rights reserved.

Editorial standardsCorrectionsFunding & disclosureContact us