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NLP ApisUnclaimed

Amazon Comprehend

Cloud-based service for automatically analyzing and extracting insights from text documents and files

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Also known as
amazon-comprehend

Available worldwide

What is Amazon Comprehend?

A machine learning service that processes text to identify entities, sentiment, topics, and key phrases. It supports both standard pre-built models and custom models trained on your own data, with APIs for document processing in multiple formats.

Independently observed

Amazon Comprehend pricing

Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.

Pricing as of verify at live pricing ↗Independently observed
from $0.50/moUsage-basedFree tier

From $0.0001 per unit (100 characters) for standard APIs. Free tier: 50K units per month for 12 months.

Standard APIs (Pay-per-use)

$0.0001 per unit (100 characters)

Entity recognition, sentiment analysis, syntax analysis, key phrase extraction, language detection, event detection, toxicity detection, prompt safety

free_tier
50k units/month for 12 months
  • Entity recognition
  • Sentiment analysis
  • Syntax analysis
  • Key phrase extraction
  • Language detection
  • Event detection
  • Toxicity detection
  • Prompt safety classification
  • PII detection
  • Redaction

Custom Classification & Entities

$3/hour training + $0.50/month management + $0.0003/unit inference

Train custom NLP models to categorize text and extract domain-specific entities

  • Custom model training
  • Custom entity extraction
  • Custom text classification
  • Model management

Managed Endpoints (Synchronous)

$0.0005 per second per Inference Unit

Real-time inference endpoints with provisioned throughput

  • Real-time synchronous inference
  • Scalable throughput with multiple IUs

Platform & deployment

Independently observed
Platforms
  • CLI
  • Web
Deployment
  • Cloud / SaaS

Amazon Comprehend alternatives

Other nlp apis we track, ranked by the same independent score.

All Amazon Comprehend alternatives, ranked →

Compare Amazon Comprehend

Side by side against other nlp apis, attribute by attribute, with a source on every value.

Independent · unbought · dated

The Vioscale score: one lens on the evidence

Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Amazon Comprehend, not the verdict.

Balanced composite 72 / 100
low · 33%updating
Signal contributions to the composite score
SignalScoreWeightContributionEvidence
Pricing transparency1000.088.4✓
Price level800.054.2✓
Security posture350.072.6✓
Reliability00.070.0-
Capabilities00.050.0-
Integrations00.040.0-

Computed . Re-weight it by intent, or see the full method.

All data & sourcesshow ↓

Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.

Market

AttributeValueEvidence
AvailabilityHqCountry: US · PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: …highsource · 2026-08-19 · 75%

Pricing

AttributeValueEvidence
Modelfreemiummediumsource · 2026-08-19 · 60%
TransparentYesmediumsource · 2026-08-19 · 60%
Free tierYesmediumsource · 2026-08-19 · 60%
Price levellowmediumsource · 2026-08-19 · 60%
Starting priceAmount: 0.5 · Currency: USDmediumsource · 2026-08-19 · 60%

Security

AttributeValueEvidence
Disclosure policyYesmediumsource · 2026-08-19 · 60%
FedrampYeshighsource · 2026-08-19 · 75%
GdprYeshighsource · 2026-08-19 · 75%
HipaaYeshighsource · 2026-08-19 · 75%
PciYeshighsource · 2026-08-19 · 75%