A standard 500 pages document (~250,000 words / 320,000 tokens) costs $0.352 to ingest and $0.3542 to generate a comprehensive executive summary using o4-mini.
Quick answer
A 500 pages document is modeled as 250,000 words or 320,000 tokens. With o4-mini, ingestion costs $0.352; a 500-token executive summary brings the modeled total to $0.3542.
Method & trust
The page uses approximately 500 words per page, estimates tokens with the selected model tokenizer, and prices input plus a 500-token summary at the model's listed rates. OCR, tables, and formatting can increase the actual count.
Feed the entire 500 pages document into context to extract fields, entities, or answer queries.
Ingest 500 pages and generate a structured 500-token executive summary with key takeaways.
Translate or reformat the entire 500 pages document into an equivalent length output.
| Model | Provider | Ingestion (500 pages) | Cached Ingestion | Summary Cost | Context Limit |
|---|---|---|---|---|---|
| o4-mini (Current) | openai | $0.352 | $0.088 | $0.3542 | 256,000 |
| GPT-5.6 Terra | openai | $0.64 | $0.064 | $0.646 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $0.80 | $0.08 | $0.8075 | 256,000 |
| o3-mini | openai | $0.352 | $0.176 | $0.3542 | 200,000 |
| o1-mini | openai | $0.352 | $0.176 | $0.3542 | 128,000 |
| Claude Sonnet 5 | anthropic | $0.66 | $0.066 | $0.665 | 1,000,000 |
Assuming a standard single-spaced document with ~500 words per page, a 500 pages document contains approximately 250,000 words, which translates to roughly 320,000 tokens using o4-mini's tokenizer. Dense PDF tables, legal boilerplate, and OCR scans may increase this by 20–30%.
o4-mini has a context window of 256,000 tokens. A 500 pages document consumes only 125.00% of its total window, easily fitting in a single prompt without requiring chunking or vector search.
Ingesting the document and outputting a concise 500-token executive summary costs $0.3542. Using 24-hour async batch API queues drops this cost to $0.1771.
If your workflow repeatedly queries or chats with this same 500 pages document, prompt caching reduces subsequent turn input costs by up to 90% (to $0.088 per turn instead of $0.352).