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Pricing sourced from spaCy · Last verified March 2026
Yes, spaCy is completely free and released under the MIT license, which permits unrestricted commercial use, modification, and distribution. There are no API fees, usage limits, or enterprise licensing tiers — companies of any size can use spaCy in production without paying Explosion (the company that maintains it). Explosion monetizes through paid custom pipeline development services and its commercial annotation tool Prodigy, but the core spaCy library remains fully open-source. This makes it a significantly cheaper option than cloud-based NLP APIs that charge per request or character processed.
spaCy and NLTK serve different audiences: NLTK is an academic and educational toolkit with extensive teaching materials and algorithm implementations, while spaCy is built specifically for production applications and large-scale processing. spaCy is dramatically faster because it's written in Cython rather than pure Python, and it provides pre-trained statistical models ready for use out of the box. NLTK requires more manual setup and is often slower on real-world workloads, but offers more flexibility for researching and implementing classical NLP algorithms. For building NLP features into a product, spaCy is almost always the better choice; for learning NLP theory or experimenting, NLTK remains popular.
Yes, spaCy offers a dedicated package called spacy-llm that integrates Large Language Models into structured NLP pipelines. This package provides a modular system for fast prototyping and prompting, allowing you to use LLMs like OpenAI's GPT models, Anthropic's Claude, or open-source models like Llama within a spaCy pipeline. The key benefit is that spacy-llm converts unstructured LLM responses into robust structured outputs suitable for NER, text classification, and other NLP tasks, often without requiring training data. This hybrid approach lets teams leverage LLM capabilities while keeping the deterministic, fast processing spaCy is known for.
spaCy offers multiple model sizes per language, typically labeled sm (small), md (medium), lg (large), and trf (transformer). For English, en_core_web_sm is around 12MB and runs fast for prototyping, while en_core_web_lg includes 300-dimensional word vectors for higher accuracy at around 560MB. The en_core_web_trf model uses RoBERTa and achieves the highest accuracy (95.1 parsing, 89.8 NER on OntoNotes) but is much larger and slower, typically requiring a GPU for reasonable speed. Choose sm/md for production at scale where speed matters, lg when you need word vectors, and trf when accuracy is paramount and compute is available.
spaCy supports 75+ languages with tokenization, lemmatization, and other basic linguistic features, and provides 84 trained pipelines for 25 languages including Spanish, French, German, Chinese, Japanese, Portuguese, Italian, Dutch, Russian, Korean, and many more. However, model quality varies significantly by language — English, German, and Chinese have the most mature pipelines, while smaller languages like Afrikaans or Amharic have basic tokenization but fewer or no pre-trained statistical models. For unsupported accuracy targets, you can train custom models on your own annotated data using spaCy's training framework and config system.
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Try spaCy Now →A leading platform for building Python programs to work with human language data, providing easy-to-use interfaces to over 50 corpora and lexical resources along with text processing libraries for classification, tokenization, stemming, tagging, parsing, and semantic reasoning.
Compare Pricing →An integrated natural language processing framework that provides a set of analysis tools for raw English text, including parsing, named entity recognition, part-of-speech tagging, and word dependencies. The framework allows multiple language analysis tools to be applied simultaneously with just two lines of code.
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