How Much Does It Cost to Summarize 1,000 Documents?
Summarizing 1,000 documents (avg 2,000 words each) costs $0.90-$3.50 with budget models (Gemini Flash, GPT-4o Mini) or $15-$100 with premium models (Claude Opus 4, GPT-4o). Processing takes 10-60 minutes.
Cost to Summarize 1,000 Documents
Assuming average document: 2,000 words (~2,700 tokens), summary output: ~400 tokens.
| Model | Cost/Document | Cost/1,000 Docs | Est. Time |
|---|---|---|---|
| Gemini 2.0 Flash | $0.0003 | $0.32 | ~1 min |
| GPT-4o Mini | $0.0006 | $0.65 | ~1 min |
| DeepSeek V3 | $0.0012 | $1.17 | ~2 min |
| Claude Haiku 4 | $0.0038 | $3.76 | ~1 min |
| Claude Sonnet 4 | $0.01 | $14.10 | ~2 min |
| GPT-4o | $0.01 | $10.75 | ~1 min |
| Claude Opus 4 | $0.07 | $70.50 | ~4 min |
Scaling: 10K and 100K Documents
| Model | 10K Documents | 100K Documents |
|---|---|---|
| Gemini 2.0 Flash | $3.23 | $32.25 |
| GPT-4o Mini | $6.45 | $64.50 |
| Claude Haiku 4 | $37.60 | $376.00 |
| Claude Sonnet 4 | $141.00 | $1410.00 |
Optimization Tips for Batch Summarization
- Use batch APIs: OpenAI and Anthropic offer 50% discount on batch API calls
- Parallel processing: Run 50-100 concurrent requests to maximize throughput
- Tiered quality: Use Gemini Flash for initial summaries, upgrade important documents to Sonnet/4o
- Chunk long documents: For documents over 10K words, summarize in chunks then consolidate
FAQ
What is the cheapest way to summarize documents with AI?
Gemini 2.0 Flash at $0.075/$0.30 per 1M tokens is the cheapest option. Summarizing 1,000 two-page documents costs under $1. For even cheaper options, use batch APIs for 50% off.
How long does it take to summarize 1,000 documents?
With parallel processing (50 concurrent requests), most models can summarize 1,000 documents in 1-10 minutes. Sequential processing takes 30-120 minutes depending on model speed.
Which model writes the best summaries?
Claude Opus 4 and GPT-4o produce the highest quality summaries with better nuance and accuracy. For most use cases, Claude Sonnet 4 offers nearly equivalent quality at 80% lower cost.
Prices last verified: April 2026. Pricing may change — always check provider websites for current rates.
Calculate your LLM API costs with KickLLM — free, no sign-up required.