What is NLTK?
Provides access to linguistic corpora and text processing tools for tokenization, classification, parsing, and semantic analysis. Widely used in educational and research settings for computational linguistics work.
NLTK pricing
We don't have NLTK's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Free and open source
Platform & deployment
Independently observed- CLI
- macOS
- Linux
- Windows
Security & compliance
Known vulnerabilities: 20 (15 in the last 12 months), max severity CRITICAL sourcea count reflects scale & disclosure, not quality
NLTK alternatives
Other nlp apis we track, ranked by the same independent score.
- CohereAI platform that keeps your data and models under your control, deployed on your infrastructurelow · 45%
- Hugging Face TransformersA collaborative platform for machine learning development and AI model sharinglow · 26%
- Amazon ComprehendCloud-based service for automatically analyzing and extracting insights from text documents and fileslow · 33%
- TextRazorNLP API for extracting meaning and understanding from textlow · 34%
- spaCylow · 32%
- Stanford CoreNLPlow · 24%
Compare NLTK
Side by side against other nlp apis, attribute by attribute, with a source on every value.
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 NLTK, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Development activity | 63 | 0.09 | 5.9 | ✓ |
| Release cadence | 99 | 0.05 | 5.1 | ✓ |
| Dependent projects | 79 | 0.06 | 5.0 | ✓ |
| Stars | 79 | 0.03 | 2.0 | ✓ |
| Security score | 48 | 0.04 | 2.0 | ✓ |
| Capabilities | 0 | 0.08 | 0.0 | - |
| Integrations | 0 | 0.07 | 0.0 | - |
| Security posture | 0 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
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.