Powered by our in-house 400B-parameter model trained exclusively for summarization. Start with 100 free summaries per month, no credit card needed. Scale up at a fraction of what GPT-5.5 Pro charges.
curl -X POST https://summarizeapi.com/api/summarize \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"text": "Your long text here...", "length": "short"}' // Response { "success": true, "summary": "Your concise summary in seconds.", "processing_time": 1.2 }
Paste any text (articles, reports, emails, contracts) and get an intelligent summary in seconds.
Our in-house 400B-parameter LLM was trained exclusively on summarization tasks, not general conversation. Every weight is optimized for precision, brevity, and factual fidelity across all domains.
Auto-detects any of the 119 supported languages and summarizes natively. Output can be translated too: Arabic, Chinese, Japanese, Spanish, French, and 114 more.
Get results in real-time with server-sent events. Results appear word by word, making it perfect for building responsive, interactive user interfaces.
One endpoint, one request. Integrate in minutes using Python, JavaScript, PHP, Ruby, Go, or any language with HTTP support. Full documentation with ready-to-use code examples.
Choose between paragraph, bullet points, or mixed format. Set the output language independently from the input for seamless multilingual workflows.
Automatically identify the 5–7 most relevant keywords and concepts in any text. Perfect for SEO, tagging, and content categorization.
GPT-5.5 Pro is an impressive general model, but it was never trained to summarize. Our 400B model was built exactly for that. The result: up to 56× cheaper per request, with better precision on summarization tasks.
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SummarizeAPI Pro
400B dedicated model
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GPT-5.5 Pro API $30 input / $180 output per 1M tokens |
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|---|---|---|
| Cost for 5,000 summaries/mo |
$5/month flat
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~$280/month |
| Cost per request | $0.001 | ~$0.056 (56× more expensive) |
| Trained for summarization | ✓ | ✗ |
| Predictable monthly cost | ✓ | ✗ Pay-per-token, bills vary |
| Full REST API access | ✓ | ✓ |
| Streaming output | ✓ | ✓ |
| 119+ languages | ✓ | Limited |
| Keyword extraction | ✓ | ✗ |
| Free tier included | ✓ | ✗ |
GPT-5.5 Pro is brilliant at many things. Summarization at scale for $5/month is not one of them. Our dedicated 400B model does one thing exceptionally well, at a price that actually makes sense for production.
Summarize news articles, press releases, and long-form content for newsletters or social media.
Condense academic papers, reports, and studies into concise abstracts for faster literature review.
Extract key points from contracts, legal documents, and case files. No need to read every page.
Summarize meeting transcripts, business reports, and customer feedback at scale.
Help students quickly grasp the key ideas from textbooks, lectures, and study materials.
Add summarization to any app with a few lines of code. REST API with full documentation.
Up to 56× cheaper per request than GPT-5.5 Pro. A free tier to test, and paid plans built for serious production use.
Extremely accurate. Our proprietary 400B-parameter model was trained exclusively on summarization, not general conversation. Every inference is optimized to preserve key facts, nuance, and intent. Independent benchmarks place our output above generic LLMs on factual fidelity and conciseness.
GPT-5.5 Pro is a general-purpose model. Our 400B model was built from the ground up for one task: summarization. The result is higher factual accuracy, consistent structured output every time, and a cost per request up to 56× lower than GPT-5.5 Pro. No prompt engineering needed, and you get a real API your code can call.
The API supports 119+ languages including English, French, Spanish, German, Italian, Portuguese, Arabic, Chinese, Japanese, Russian, and many more. Language is auto-detected, and you can set the output language independently from the input for seamless multilingual workflows.
Up to 7,500 words per request, which covers full articles, research papers, legal documents, and meeting transcripts. The model intelligently focuses on what matters most as the input gets longer.
Absolutely. The API is production-ready with 99.9% uptime SLA, fast response times, and horizontally scaled infrastructure. Professional and Business plans include priority processing and dedicated support.
One endpoint, one POST request. Works with curl, Python requests, JavaScript fetch, PHP, Go, and any HTTP client. Full documentation with copy-paste code examples. Most developers are up and running in under 10 minutes. See the docs
Stop paying $280/month on GPT-5.5 Pro for something our dedicated 400B model handles at $5/month. 56× cheaper, purpose-built for summarization, with a free tier to get started.
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