Pydantic Logfire vs SigDek

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Pydantic Logfire compared with SigDek
Detail	Pydantic Logfire	SigDek
What it does	Production-grade AI and general observability built on OpenTelemetry	Evidence of what your AI coding agents did
Stage	Established	Not given
Founded	2018	Not given
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	Personal: Free with 10 million records/month hard-capped at $0. Team: $49/month with 10 million records included, $2 per million additional. Growth: $249/month with everything in Team plus unlimited seats and up to 90-day retention. Enterprise: Custom pricing for Cloud, Dedicated, or Self-hosted opt	Free for one developer on their own machine. Team plan $99 a month for up to 10 people. Business plan $199 a month for up to 50 people. All paid plans include unlimited machines, records and reports, support for Claude Code and Cursor, Flag and Block rules, and 13 months of records. 14-day free tria
Key features	Real-time cost tracking and model usage analytics SQL query interface for traces and logs Integrated evals framework for AI output evaluation AI Gateway for centralized LLM API management Feature flags and managed variables without redeploy	Records commands, file edits, web requests and MCP calls from Claude Code and Cursor Hash chain verification to detect changes, gaps or deletions in records Block rules to stop matching actions before they run PDF and CSV reports for auditors covering up to 13 months SOC 2 criteria mapping for security reviews Flag rules that mark risky actions out of the box Verifiable reports that anyone can check on verify page Open-source recorder for local use without account Support for unlimited machines per team member Automatic background upload with minimal performance impact
What makes it different	Works with any language via standard OpenTelemetry, not proprietary SDKs Traces full application stack, not just LLM layer Integrated evaluation framework with production datasets and live evals Querying production telemetry with standard PostgreSQL SQL Built by the team behind Pydantic with 60K+ GitHub stars	Hash chain verification ensures records cannot be altered or deleted without detection SOC 2 audit-ready reports with six criteria-mapped sections Never records prompt text, file contents or command output for privacy Block rules stop risky actions before they execute Takes under 50ms per action with background uploads
Community votes	0	0
DR (Domain Rating by Ahrefs)	83 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	30	0
Citation Flow (Majestic)	54	0
Referring domains (Majestic)	7880	0

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