PrivacyPick

Kagi Assistant vs Lumo Comparison

Feature
Overview
Rating7.27.5
Pricing
  • $5.00/moStarter (monthly)
  • $4.50/moStarter (annual)
  • $10.00/moProfessional (monthly)
  • $9.00/moProfessional (annual)
  • $25.00/moUltimate (monthly)
  • $22.50/moUltimate (annual)
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  • Starter (monthly): USD 5.00/month, 300 searches/month, Kagi Assistant in Quick mode
  • Starter (annual): USD 4.50/month billed as $54/year (10% annual discount)
  • Professional (monthly): USD 10.00/month, unlimited search, Assistant Quick mode with a larger monthly allowance
  • Professional (annual): USD 9.00/month billed as $108/year (10% annual discount)
  • Ultimate (monthly): USD 25.00/month, unlimited search, Assistant Research mode plus flagship models
  • Ultimate (annual): USD 22.50/month billed as $270/year (10% annual discount)
  • $9.99/moLumo AI Plus (yearly)
  • $12.99/moLumo AI Plus (monthly)
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  • Lumo AI Plus (yearly): USD 9.99/month billed as $119.88 every 12 months (23% off the monthly rate); monthly billing available at $12.99/month with no annual commitment. 30-day money-back guarantee.
  • Lumo AI Plus (monthly): USD 12.99/month, no annual commitment
Free tierPaid only
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No standing free tier for Assistant. The Trial plan offers 100 searches and 100 Assistant interactions before requiring a paid plan, and still requires creating an account.

Limited free tier
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Limited Max model usage, limited messages and chat history, limited image generations, and 1 Project; the exact numeric caps are not published

Established20242025
Platforms
Web
WebAndroidiOS
Privacy
Account requiredRequiredOptional
IP anonymizationUndisclosedUndisclosed
Storage modelServer-encryptedZero-access encrypted
Retention24 hours by default
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Conversation threads are automatically deleted after one day by default; a thread can also be deleted immediately by hand. A thread a user reports (for example, to flag a bug) is retained for 30 days before deletion for debugging purposes. Requests to the model backend are not saved or tied to a customer account by default, though Kagi notes they may be retained briefly as part of request debugging. On the model-provider side, retention varies by provider and is documented separately — see the Privacy Architecture section.

Erased at guest-session end by default
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Two distinct behaviours. In guest mode the conversation is erased when the session ends and nothing is persisted at all. With an account, chat history is saved only if you choose to keep it, and it is stored under zero-access encryption — Conversation Keys wrapped by a Master Key wrapped by your own PGP keypair, which is unlocked by your password. The operator states it stores no metadata such as timestamps, IP addresses, or chat context alongside either.

Provider trainingContractual no-trainUndisclosed
JurisdictionUnited States (Delaware)
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Kagi Inc. is a Delaware Public Benefit Corporation headquartered in San Francisco, California.

Switzerland
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Legal entity Proton AG, registered at Route de la Galaise 32, 1228 Plan-les-Ouates, Geneva, Switzerland, per the product's own privacy policy.

Hardware attestationNot specifiedNot specified
Source codeClosed sourceFully open source
TelemetryNo telemetryOn unless you opt out
Past data breachNoNo
Features
Models offered
Claude Opus 5.5Claude 4.5 SonnetClaude 4.5 HaikuClaude Fable 5.1ChatGPT / GPT 5 chatGPT 6 AstraGPT 6 SolGPT 6 LunaGPT 5.6 TerraGPT OSS 120BGemini 2.5 ProGemini 3.1 Pro PreviewGemini 3.8 FlashGemini Flash LiteGemmaMistral Large 3Mistral Medium 3.5Mistral SmallMistral MagistralMistral PixtralDeepSeek V4 ProDeepSeek V4.1 FlashQwen 3.8 MaxQwen 27BGrok 4.7Muse Spark 1.3Kimi K3Kimi K2.7MiniMax M3GLMNous Hermes-4
Lumo 2.0 LiteLumo 2.0 MaxApertus 1.5
Multi-model switchingYesYes
Web searchYesYes
File uploadYesYes
Underlying productNot specifiedNot specified