LLM Observability Cost Comparison
Enter one workload — requests per month, spans per request, KB per trace and scores. The table prices it on Langfuse Core and Pro (billed by units, i.e. event count) and Braintrust Starter and Pro (billed by GB processed), plus LangSmith and Helicone plan prices for reference. The cheaper option flips with trace size. Estimates only; provider pricing pages prevail.
計算はブラウザ内で行われます。データはアップロードされません。
| Option | Monthly | $ / 1k requests | Note |
|---|
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Langfuse bills by units (event count: traces + observations + scores, 100k included, then $8→$6 per 100k graduated) while Braintrust bills by GB processed ($4 Starter / $3 Pro per GB) plus scores — so the cheaper option flips with trace size. LangSmith (Developer $0 with 5k base traces, Plus $39/seat with 10k) and Helicone (Hobby free 10k requests / 1 GB, Pro $79, Team $799) are shown as plan prices only because their usage overage is not published as a fixed rate. Retention: Langfuse Core 90 days / Pro 3 years; Braintrust Starter 14 / Pro 30 days.
Estimates only. Official list prices as of 2026-11-02 (Asia/Shanghai); the provider's pricing page prevails. Sources: Langfuse pricing · Braintrust pricing · LangSmith pricing · Helicone pricing
Langfuse Cost Calculator · Braintrust Cost Calculator · LLM API費用計算 · AI Agent Cost Calculator · RAG Cost Calculator · LLM Prompt Caching Cost Calculator
同じグループのツール
- Langfuse Cost Calculator Langfuse units (traces + observations + scores) → monthly cost.
- Braintrust Cost Calculator Braintrust GB processed + scores + retention → monthly cost.
- LLM API費用計算 任意$/1MからToken費用。
- AI Agent Cost Calculator Multi-step agent token cost per task and month.
- RAG Cost Calculator Embed + retrieve + LLM token cost in USD.
- LLM Prompt Caching Cost Calculator No-cache vs cached prompt monthly cost and savings.
- Product Analytics Cost Comparison PostHog vs Mixpanel vs Sentry monthly $.
使い方
- データはアップロードされますか?
- いいえ。これらの計算とQRコードはブラウザ内で実行されます。
- AI価格は変わりますか?
- はい。ベンダーは頻繁に改定します。$/1Mやプランを編集し、予算前に公式を確認してください。
- データはアップロードされますか?
- いいえ。計算はブラウザ内で完結します。