Best LLMs for Summarization (2026)
Large language models that produce concise, accurate, and readable summaries of long documents, research papers, meeting transcripts, and web pages.
Why Claude Sonnet 4 is Best for Summarization
Claude Sonnet 4 ranks highest for this use case based on Arena ELO score, benchmark performance, and capability coverage. It provides the best combination of quality, speed, and reliability for these specific tasks.
Cost Estimate
For a typical workload (~50M tokens/month, 60% input / 40% output), the cheapest qualifying model (Claude Haiku 4) costs approximately $130.00/month. The most capable model may cost more but delivers higher quality results.
Price vs Quality for Summarization
Anthropic
Cohere
Google
Openai
Top 5 Models Compared
| Rank | Model | Provider | Input $/M | Output $/M | Arena ELO | Speed (tok/s) |
|---|---|---|---|---|---|---|
| #1 | Claude Sonnet 4 | Anthropic | $3.00 | $15.00 | 1280 | 78 |
| #2 | Gemini 2.5 Pro | $1.25 | $10.00 | 1430 | 70 | |
| #3 | GPT-4o | OpenAI | $2.50 | $10.00 | 1260 | 95 |
| #4 | Claude Haiku 4 | Anthropic | $1.00 | $5.00 | 1220 | 130 |
| #5 | GPT-4.1 | OpenAI | $2.00 | $8.00 | 1290 | 88 |
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