ChatGPT vs Langfuse comparison

By starting price alone, ChatGPT is $21 cheaper. But price is not everything, so see below what differs.

ChatGPT and Langfuse compared side by side in AI.

CurrencyUSDKRWEUR

What is different

Starting price

ChatGPT$8+
Langfuse$29+

Korean support

ChatGPTGood
LangfuseLimited

ChatGPT

The most widely used general-purpose AI chatbot. Chat, writing, coding, image generation and web search in one place

What is good

  • No. 1 in users, so plenty of guides and tips
  • Widest range of features
  • Polished app and voice chat

What could be better

  • Tight usage limits on the free plan
  • Top features need the expensive Pro plans

ChatGPT official site

Langfuse

An open-source (MIT) LLM engineering platform for call tracing, cost, prompt management and evaluation of LLM apps in one place

What is good

  • MIT open source/free self-hosting (all core features)
  • Tracing/token/cost aggregation
  • Prompt version management/playground

What could be better

  • A developer tool, so hard for non-developers
  • The cloud charges extra when units are exceeded

Langfuse official site

At a glance

ItemChatGPTVisit siteLangfuseVisit site
Starting price$8+Official USD price$29+Official price
Free tierFree plan availableFree plan available
Korean supportGoodLimited
Main models
  • GPT-6 (Sol)
  • GPT-6 Luna
  • GPT-6 Pro (Astra)
  • GPT-6.1 Sol
  • Image: ChatGPT Images 2.5
Model-agnostic: traces all LLM calls such as OpenAI/Anthropic through the Python/JS SDKs, OpenTelemetry, LiteLLM proxy logging and more
Pricing type-Monthly subscription, Pay-as-you-go/Credits, Free, Quote/Enterprise Contract
TypeAI servicesAI apps
CategoryChatbot/Assistant, Image Generation, CodingDeveloper Tools
CompanyOpenAI, United StatesLangfuse (acquired by ClickHouse), United States
Plans
  • Free
  • Go $8
  • Plus $20
  • Pro $100/$200/$500
  • Business $25 (annual $20)
  • Enterprise/Edu
  • Hobby free (50,000 units per month)
  • Core $29
  • Pro $199
  • Enterprise $2,499 (per month, includes 100,000 units, $8 per extra 100,000)
  • Teams add-on $300
  • Self-hosted OSS is free
  • Self-hosted Enterprise quote
Pros
  • No. 1 in users, so plenty of guides and tips
  • Widest range of features
  • Polished app and voice chat
  • MIT open source/free self-hosting (all core features)
  • Tracing/token/cost aggregation
  • Prompt version management/playground
  • LLM-as-judge/dataset evaluation
  • Free cloud plan
Cons
  • Tight usage limits on the free plan
  • Top features need the expensive Pro plans
  • A developer tool, so hard for non-developers
  • The cloud charges extra when units are exceeded
  • No Korean interface

Prices and benefits may change. Check the official site before you pay.

Prices converted at 1 USD = ₩1,327.84 (2026-10-20). Original price shown in brackets. Taxes as listed by each provider.

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