Sigma vs Claude with connectors
Access isn’t the same as answers.
Connectors let Claude read your tools one at a time. Sigma joins, cleans and certifies the data across all of them, so every answer starts from the same numbers.
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Same question, two answers
Ask it twice. See the difference.
Both were asked the same thing. One reads the tools live. The other answers from data that’s already been matched and checked.
Claude + connectors
You asked
What was gross margin by region last quarter?
Claude
I pulled revenue from the ERP and costs from the GL. The ERP and the CRM name regions differently (“SE” vs “South East”), so I’ve assumed they match.
Overall: roughly 31%. Southeast: somewhere between 26% and 29%, depending on how the regions map.
Assumed, not verified
No sources cited
Sigma
You asked
What was gross margin by region last quarter?
Sigma
31.4% overall. Regions follow your finance team’s definitions, with ERP and CRM customers matched to one list first.
Northeast
34.2%
Midwest
31.0%
Southeast
27.8%
Certified
Cites GL · ERP regions · CRM accounts
The short answer
Connectors read your tools. Sigma reconciles them.
Claude with connectors (MCP) can read your systems live, but each conversation starts from raw, disconnected sources. Sigma builds and maintains a unified data layer across those systems: it matches records, applies your business rules, and marks every answer as certified or provisional, with its sources.
When to use which
Use the right tool for the question.
FAQ
Questions, answered.
Does Sigma replace Claude?
No. Sigma is the data layer behind your answers. Keep using Claude for everything else.
Is my data used to train models?
No. Customer data is never used to train public models.
