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.
計算在瀏覽器完成。不會上傳數據。
| 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
同組工具
- 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 按任意每百萬單價估算 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 $.
怎麼用
- 數據會上傳嗎？
- 不會。這些計算和二維碼都在你的瀏覽器裏完成。
- 这些 AI 价格会变吗？
- 会。厂商常改公开价。可编辑每百万单价或方案字段，预算前请对照官网定价页。
- 使用数据会上传吗？
- 不会。Token 与订阅计算都在浏览器完成，不会发到服务器。