Best Token Cost Tracking Tools in 2026
Tools for tracking token-level costs across LLM provider APIs.
We evaluated the leading options for spend firewall in 2026 based on feature depth, pricing transparency, ease of setup, and fit for real-world workflows. Here's our shortlist.
1. sipi.bot
Real-time capsPer-call and per-agent spend caps with real-time enforcement.
Best for: Teams that need to cap, not just observe
2. Helicone
Proxy loggingOpen-source proxy with detailed cost logs.
Best for: Self-hosting teams
3. Langfuse
Open sourceSelf-hostable LLM analytics.
Best for: Privacy-focused teams
4. OpenRouter
Unified billingMulti-model routing with unified cost view.
Best for: Multi-provider routing
How we evaluated
Each option was assessed on four criteria: (1) depth of features for the specific spend firewall use case, (2) pricing model and transparency, (3) time-to-value and onboarding friction, and (4) real-world usability across team sizes. Options that scored well on breadth but poorly on the specific spend firewall workflow were ranked lower.