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OMNI Datastream vs sec-api.io

A direct comparison of the two leading SEC data APIs for developers and AI agents.

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Speed

OperationOMNIsec-api.ioWinner
Entity resolution62ms231msOMNI (3.7x)
Filing search64ms281msOMNI (4.4x)
Section extraction64ms348msOMNI (5.4x)
XBRL-to-JSON61ms392msOMNI (6.4x)

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Pricing

TierOMNIsec-api.io
Free250 calls/month (renewable)100 calls (lifetime)
Pay-as-you-goFrom $0.01/callNot offered
Personal$55/month$49/month
Business/Team$239/month$199/month
EnterpriseCustomCustom
Key difference: OMNI offers true pay-as-you-go with no monthly minimum. An agent making 200 queries/month pays 4withOMNIvs4 with OMNI vs 49 minimum with sec-api.io.

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Features

FeatureOMNIsec-api.io
Endpoints217+~35
Filing coverage1993–present (456K+ manifests)1993–present (20M+ claimed)
Full-text searchYesYes
Semantic searchYes (Pinecone + Voyage)No
Hybrid search (RRF)YesNo
Intelligence bundlesYes (company, security, earnings)No
Filing diffYes (amendment tracking)No
Saved monitorsYes (webhook alerts)No
Workflow templatesYes (3 built-in)No
MCP integrationYes (native)No
CLIYes (omni-sec on npm)No
SDKs4 (JS, Python, Go, Rust)2 (Python, Node.js)
HomebrewYesNo
Skills8 canonical skillsNo
Agent bootstrapYes (ephemeral credentials)No
Budget controlsYes (threshold alerts)No
WebhooksYes (signed, replay)No
Event streamsYes (cursor-based)No
Data provenanceYes (trace on every object)No
Filing export6 formats (JSON, MD, CSV, XLSX, DOCX, PDF)PDF only

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Endpoint Coverage

CategoryOMNIsec-api.io
Filing searchYesYes
Full-text searchYesYes
Section extractionYesYes
XBRL/statementsYesYes
Entity mappingYes (+ FIGI, ISIN)Yes
Insider tradingYesYes
13F holdingsYes (+ comparison)Yes
Executive compYes (+ comparison)Yes
EnforcementYes (5,993+ records)Yes
Board compositionYesYes (directors)
SubsidiariesYes (Exhibit 21)Yes
Audit feesYesNo
Form 144YesYes
Form D (structured)Yes (XML extraction)Yes
Form CYesYes
Reg A (Form 1-A)YesYes
N-PORTYesYes
N-CENYesYes
N-PXYesYes
Form ADVYes (+ schedule/AUM filters)Yes
EDGAR indexYes (3 endpoints)Yes
Bulk downloadYes (summary + quarter)Yes (file mirror)
Real-time streamingYes (WebSocket + webhooks)Yes (WebSocket only)
Semantic searchYesNo
Intelligence bundlesYesNo
Filing diffYesNo
MonitorsYesNo
Factor analysisYes (84 factors)No
Macro dataYes (12 countries)No
Portfolio analyticsYesNo

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Developer Experience

FeatureOMNIsec-api.io
Onboarding time< 2 minutes~5 minutes
API key auto-provisionYes (on signup)Manual
Free tier250/month, no card100 lifetime
Documentation205 pages~40 pages
Tutorials8 (Python + JS)27 (Python only)
OpenAPI specYes (generated from Zod)No
ChangelogYesNo
Status pageYesNo
Error codesStructured with requestIdBasic
Rate limit headersYes (remaining, limit)No
Budget headersYes (usage %, threshold)No

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Migration

Already using sec-api.io? Our migration guide maps every sec-api.io endpoint to its OMNI equivalent. 
# sec-api.io                          →  OMNI Datastream
# /mapping/ticker/AAPL                →  /v1/entities/resolve?ticker=AAPL
# POST / (filing search)              →  /v1/filings?ticker=AAPL&form=10-K
# /extractor?url=...&item=1A          →  /v1/filings/latest/sections/item_1a
# /xbrl-to-json?accession=...         →  /v1/statements/all?ticker=AAPL

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Try OMNI Datastream

curl "https://api.secapi.ai/v1/entities/resolve?ticker=AAPL" \
  -H "x-api-key: YOUR_API_KEY"
Get your free API key → — 250 calls/month, no card required.