Open formula. Browser-based calculations. Source-dated rates. No API keys. No provider login. No tracing SDK. No account required. Input payloads are not stored.
Pricing source date: 2026-05-28 · Build verification: 2026-05-28 · Stale threshold: 30 days. Estimates depend on observability-platform pricing assumptions — ingest volume, event/trace retention, and seat or usage tiers — not LLM model prices. Observability vendors price differently; verify your platform's current rate card before committing.
Estimates monthly LLM observability spend from traced request volume, log size, retention, and provider pricing tier.
Formula
monthly_observability_cost = provider_base_monthly + usage_rate * traced_event_volume * retention_multiplier
Primary source register
Observability providers frequently change free-tier and retention terms. Verify current provider pricing before adopting a tracing stack.
- https://openai.com/pricing
- https://www.anthropic.com/pricing
- https://platform.claude.com/docs/en/about-claude/pricing
- https://platform.claude.com/docs/en/about-claude/models/overview
- https://cloud.google.com/vertex-ai/generative-ai/pricing
- https://www.together.ai/pricing
- https://replicate.com/pricing
- https://fireworks.ai/pricing
- https://groq.com/pricing
- https://deepinfra.com/pricing
- https://aws.amazon.com/bedrock/pricing/
- https://azure.microsoft.com/pricing/details/cognitive-services/openai-service/
Included assumptions
- requests per day
- average log bytes
- retention days
- provider-specific normalized usage model
Excluded assumptions
- seat pricing not represented in provider usage model
- self-host ops cost
- data egress
- enterprise security add-ons
Architecture-cost audit
Observability overheadTraced requests, log volume, retention, seats, and provider-specific usage tiers.
Diagnostic output
This tool returns Cost classification, Dominant cost driver, Decision threshold, and Sensitivity. Diagnostic focus: Observability overhead as a ratio of inference cost and request-volume sensitivity..
Affiliate link. Model Ruler may earn a commission if you sign up. This does not affect what you pay.