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Helicone

Open-source LLM observability with an AI gateway; cost-based rate limits per user or property. In maintenance mode.

ObservabilityVendor: HeliconeLast checked 2026-10-20Not vendor-verified
Acquired by Mintlify on 3 Mar 2026; product moved to maintenance mode (no new features). Source
As of Oct 2026 the Helicone site banner says 'Helicone is no longer part of Mintlify. Details to come soon.' Source
Hard budgets (team / key / user) (scored)partial
Cost-based limits (in cents) per time window, per user or custom property
Source: docs.helicone.ai/features/advanced-usage/custom-rate-limits
Rate & spend limits (scored)yes
Source: docs.helicone.ai/features/advanced-usage/custom-rate-limits
Cost attribution / chargeback tags (scored)yes
Custom properties for cost by user/feature
Source: docs.helicone.ai/features/advanced-usage/custom-properties
FOCUS export (scored)unknown
No FOCUS export found
EU data residency option (scored)yes
EU region via eu- prefixed keys
Source: docs.helicone.ai/helicone-headers/helicone-auth
Public pricing (scored)partial
Source: helicone.ai/pricing
Open sourceyes
Apache-2.0
Source: github.com/Helicone/helicone
HostingBoth
Cloud; on-prem on Enterprise; OSS self-host
Source: helicone.ai/pricing
Supported providers / models100+
Source: docs.helicone.ai/gateway/overview
Cachingyes
Response caching via headers
Source: docs.helicone.ai/helicone-headers/header-directory
Pricing modelFreemium + usage-based
Source: helicone.ai/pricing
Public price pointsFree 10k requests; Pro $79/mo; Team $799/mo; usage-based pricing on top (rates not shown in page text)
Source: helicone.ai/pricing

Not verified yet: FOCUS export. "unknown" means we could not confirm it in public sources. Vendors can send evidence to update a cell; see get verified. Verification never changes the scoring rules.