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HomeAI Cost per TaskSummarize a 100-page PDF

Documents

What it costs to summarize a 100-page PDF

A 100-page report sent whole to the model, answered with a one-page executive summary.

Pricing verified: September 2026

The short answer

Between $0.0036 and $0.690 per run, depending on the model. That is a 193× spread for the same job.

Cheapest that fits
GPT-5 Nano
$0.0036
$0.357 at 100 PDFs a month
Best value
GPT-5 Nano
$0.0036
$0.357 at 100 PDFs a month
Highest quality
GPT-6 Astra
$0.690
$69.00 at 100 PDFs a month

How this is calculated

100 pages of dense prose at ~500 words per page = ~50,000 words ≈ 65,000 input tokens. The summary back is ~600 words ≈ 800 output tokens.

65,000 input tokens800 output tokens66k tokens context needed

Cost = (input tokens ÷ 1M × input price) + (output tokens ÷ 1M × output price). Prices come from our daily-verified model data. Batch and cached-input discounts are not applied — they only ever make these numbers smaller.

Every model, cheapest first

ModelProviderPer runAt 100 PDFs a monthContext
Llama 3.2 1B Instructneeds chunkingMeta$0.0019$0.19260k tokens
Gemma 2 9Bneeds chunkingGoogle$0.0020$0.2028k tokens
Llama 3.1 8B Instructneeds chunkingMeta$0.0033$0.33116k tokens
GPT-5 NanoOpenAI$0.0036$0.357400k tokens
gpt-oss-safeguard-20bOpenAI$0.0047$0.471131k tokens
Mistral Small 3.2 24BMistral$0.0050$0.503128k tokens
Gemini 2.0 Flash LiteGoogle$0.0051$0.5111.0M tokens
Ministral 3 3B 2512Mistral$0.0066$0.658131k tokens
Devstral Small 1.1Mistral$0.0067$0.674131k tokens
Mistral Small Creativeneeds chunkingMistral$0.0067$0.67433k tokens
Voxtral Small 24B 2507needs chunkingMistral$0.0067$0.67432k tokens
Mistral Small 3.1Mistral$0.0067$0.674128k tokens
Gemini 2.0 FlashGoogle$0.0068$0.6821.0M tokens
Gemini 2.5 Flash LiteGoogle$0.0068$0.6821.0M tokens
Gemini 2.5 Flash Lite Preview 09-2025Google$0.0068$0.6821.0M tokens
GPT-4.1 NanoOpenAI$0.0068$0.6821.0M tokens
Mistral 7B Instruct v0.1needs chunkingMistral$0.0073$0.7303k tokens
Gemma 4 26B A4BGoogle$0.0088$0.877262k tokens
Llama 3 8B Instructneeds chunkingMeta$0.0092$0.9218k tokens
DeepSeek V4-FlashDeepSeek$0.0093$0.9321M tokens
Ministral 3 8B 2512Mistral$0.0099$0.987262k tokens
Mistral NemoMistral$0.0099$0.987131k tokens
GLM-5.3 FlashZ.ai$0.010$1.011M tokens
GPT-4o MiniOpenAI$0.010$1.02128k tokens
Mistral Small 4Mistral$0.010$1.02262k tokens
Qwen 3.8 FlashAlibaba$0.011$1.08991k tokens
Llama Guard 4 12BMeta$0.012$1.18164k tokens
Ministral 3 14B 2512Mistral$0.013$1.32262k tokens
Sabaneeds chunkingMistral$0.013$1.3533k tokens
GPT-5.6 LunaOpenAI$0.014$1.401.1M tokens
Grok Code Fast 1xAI$0.014$1.42256k tokens
Claude 3 HaikuAnthropic$0.017$1.73200k tokens
Gemini 3 Flash PreviewGoogle$0.017$1.751.0M tokens
GPT-5 MiniOpenAI$0.018$1.79400k tokens
GPT-5.1-Codex-MiniOpenAI$0.018$1.79400k tokens
DeepSeek V3DeepSeek$0.018$1.84128k tokens
Grok 3 MinixAI$0.020$1.99131k tokens
Grok 3 Mini BetaxAI$0.020$1.99131k tokens
Codestral 2508Mistral$0.020$2.02256k tokens
Gemini 2.5 FlashGoogle$0.021$2.151.0M tokens
Gemini 3.5 Flash-LiteGoogle$0.021$2.151.0M tokens
Nano Banana (Gemini 2.5 Flash Image)needs chunkingGoogle$0.021$2.1533k tokens
Llama 3.2 11B Vision InstructMeta$0.023$2.27131k tokens
Mistral Small 3needs chunkingMistral$0.023$2.3333k tokens
Muse Glimmer 30BMeta$0.024$2.40131k tokens
Gemma 4 31BGoogle$0.026$2.61262k tokens
Llama 3.1 70B InstructMeta$0.026$2.63131k tokens
GPT-4.1 MiniOpenAI$0.027$2.731.0M tokens
Devstral 2 2512Mistral$0.028$2.76262k tokens
Devstral MediumMistral$0.028$2.76131k tokens
Mistral Medium 3Mistral$0.028$2.76131k tokens
Mistral Medium 3.1Mistral$0.028$2.76131k tokens
DeepSeek V4-ProDeepSeek$0.029$2.901M tokens
Llama Guard 3 8BMeta$0.031$3.12131k tokens
Llama 4 ScoutMeta$0.033$3.35512k tokens
GPT-3.5 Turboneeds chunkingOpenAI$0.034$3.3716k tokens
Mistral Large 3 2512Mistral$0.034$3.37262k tokens
Llama 3 70B Instructneeds chunkingMeta$0.034$3.378k tokens
Gemini 3.1 FlashGoogle$0.035$3.491M tokens
Mixtral 8x7B Instructneeds chunkingMistral$0.036$3.5533k tokens
DeepSeek R1DeepSeek$0.038$3.75128k tokens
Llama 4 MaverickMeta$0.040$4.03256k tokens
GPT Audio MiniOpenAI$0.041$4.09128k tokens
Gemma 2 27Bneeds chunkingGoogle$0.043$4.288k tokens
Gemini 3.6 FlashGoogle$0.052$5.181.0M tokens
Gemini 3.7 FlashGoogle$0.052$5.181.0M tokens
Claude 3.5 HaikuAnthropic$0.055$5.52200k tokens
Claude 4 HaikuAnthropic$0.055$5.52200k tokens
Codestral 25.01Mistral$0.061$6.07256k tokens
Kimi K2.7 CodeMoonshot$0.065$6.49256k tokens
GPT-3.5 Turbo (older v0613)needs chunkingOpenAI$0.067$6.664k tokens
Claude Haiku 4.5Anthropic$0.069$6.90200k tokens
o3 MiniOpenAI$0.075$7.50200k tokens
o3 Mini HighOpenAI$0.075$7.50200k tokens
o4 MiniOpenAI$0.075$7.50200k tokens
o4 Mini HighOpenAI$0.075$7.50200k tokens
GPT-5.2 MiniOpenAI$0.082$8.18128k tokens
Muse SparkMeta$0.085$8.461.0M tokens
GPT-5OpenAI$0.089$8.92400k tokens
GPT-5 ChatOpenAI$0.089$8.92128k tokens
GPT-5 CodexOpenAI$0.089$8.92400k tokens
GPT-5.1OpenAI$0.089$8.92400k tokens
GPT-5.1 ChatOpenAI$0.089$8.92128k tokens
GPT-5.1-CodexOpenAI$0.089$8.92400k tokens
GPT-5.1-Codex-MaxOpenAI$0.089$8.92400k tokens
Gemini 2.5 ProGoogle$0.089$8.921.0M tokens
Gemini 2.5 Pro Preview 05-06Google$0.089$8.921.0M tokens
Gemini 2.5 Pro Preview 06-05Google$0.089$8.921.0M tokens
GLM-5.2Z.ai$0.095$9.451M tokens
GLM-5.3Z.ai$0.095$9.451M tokens
GPT-3.5 Turbo Instructneeds chunkingOpenAI$0.099$9.914k tokens
Mistral Medium 3.5Mistral$0.104$10.35256k tokens
Gemini 3.5 FlashGoogle$0.105$10.471.0M tokens
GPT-5.2OpenAI$0.125$12.50200k tokens
GPT-5.3 ChatOpenAI$0.125$12.50128k tokens
GPT-5.3-CodexOpenAI$0.125$12.50400k tokens
Grok 4xAI$0.135$13.482M tokens
Grok 4.5xAI$0.135$13.48500k tokens
Grok 4.6xAI$0.135$13.48500k tokens
Mixtral 8x22B Instructneeds chunkingMistral$0.135$13.4866k tokens
Pixtral Large 2411Mistral$0.135$13.48131k tokens
Qwen 3.8 MaxAlibaba$0.135$13.481M tokens
GPT-4.1OpenAI$0.136$13.641.0M tokens
o3OpenAI$0.136$13.64200k tokens
o4 Mini Deep ResearchOpenAI$0.136$13.64200k tokens
Claude Sonnet 5Anthropic$0.138$13.801M tokens
GPT-5.6 SolOpenAI$0.138$13.801.1M tokens
GPT-5.6 TerraOpenAI$0.140$13.961.1M tokens
Gemini 3.1 ProGoogle$0.140$13.962M tokens
Nano Banana Pro (Gemini 3 Pro Image Preview)needs chunkingGoogle$0.140$13.9666k tokens
GPT-5 Image MiniOpenAI$0.164$16.41400k tokens
Qwen 3.7 MaxAlibaba$0.169$16.851M tokens
GPT AudioOpenAI$0.171$17.05128k tokens
GPT-4oOpenAI$0.171$17.05128k tokens
GPT-5.4OpenAI$0.175$17.45272k tokens
GPT-3.5 Turbo 16kneeds chunkingOpenAI$0.198$19.8216k tokens
Mistral Large 2Mistral$0.202$20.22128k tokens
Claude 3.7 Sonnet (thinking)Anthropic$0.207$20.70200k tokens
Claude Sonnet 4Anthropic$0.207$20.70200k tokens
Claude Sonnet 4.5Anthropic$0.207$20.701M tokens
Claude Sonnet 4.6Anthropic$0.207$20.701M tokens
Grok 3xAI$0.207$20.70131k tokens
Grok 3 BetaxAI$0.207$20.70131k tokens
Kimi K3Moonshot$0.207$20.701M tokens
Claude Opus 4.5Anthropic$0.345$34.50200k tokens
Claude Opus 4.6Anthropic$0.345$34.501M tokens
Claude Opus 4.7Anthropic$0.345$34.501M tokens
Claude Opus 4.8Anthropic$0.345$34.501M tokens
Claude Opus 5Anthropic$0.345$34.501M tokens
GPT-5.5OpenAI$0.349$34.901M tokens
Claude 3.5 SonnetAnthropic$0.414$41.40200k tokens
GPT-5 ImageOpenAI$0.658$65.80400k tokens
GPT-4 TurboOpenAI$0.674$67.40128k tokens
GPT-4 Turbo (older v1106)OpenAI$0.674$67.40128k tokens
GPT-4 Turbo PreviewOpenAI$0.674$67.40128k tokens
o3 Deep ResearchOpenAI$0.682$68.20200k tokens
Claude Fable 5Anthropic$0.690$69.001M tokens
Claude Fable 5.1Anthropic$0.690$69.001M tokens
Claude Mythos 5Anthropic$0.690$69.001M tokens
Claude Mythos 5.1Anthropic$0.690$69.001M tokens
GPT-6 AstraOpenAI$0.690$69.001.1M tokens
o1OpenAI$1.02$102200k tokens
Claude Opus 4Anthropic$1.04$104200k tokens
Claude Opus 4.1Anthropic$1.04$104200k tokens
GPT-5 ProOpenAI$1.07$107400k tokens
o3 ProOpenAI$1.36$136200k tokens
GPT-4needs chunkingOpenAI$2.00$2008k tokens
GPT-4 (older v0314)needs chunkingOpenAI$2.00$2008k tokens
o1-proOpenAI$10.23$1,023200k tokens

“Needs chunking” means the model's context window can't hold this job in a single pass, so the real cost is higher than the figure shown and quality usually suffers.

Should you just pick the cheapest?

This is an input-heavy job, so the input price per million tokens decides almost the whole bill — the summary you get back is rounding error. Check the context window before the price: a model that can't hold 65,000 tokens has to be fed in chunks, which costs more and summarises worse.

Price your own token counts →best ai for summarizing pdfs →best long context ai →ai context window comparison →ai api cost calculator →

Frequently asked

How much does it cost to summarize a 100-page PDF with AI?

$0.0036 on GPT-5 Nano, the cheapest capable option, rising to $0.690 on GPT-6 Astra at the top end. GPT-5 Nano is the value pick at $0.0036 per run. The job is priced at 65,000 input and 800 output tokens — see the working below.

How did you work out the token count for this task?

100 pages of dense prose at ~500 words per page = ~50,000 words ≈ 65,000 input tokens. The summary back is ~600 words ≈ 800 output tokens.

What does this cost at 100 PDFs a month?

$0.357 a month on GPT-5 Nano, $0.357 on GPT-5 Nano, and $69.00 on GPT-6 Astra. Batch APIs typically halve these figures for work that can wait, and prompt caching cuts the input side further when the same context is reused.

Is the cheapest model the right choice for this task?

This is an input-heavy job, so the input price per million tokens decides almost the whole bill — the summary you get back is rounding error. Check the context window before the price: a model that can't hold 65,000 tokens has to be fed in chunks, which costs more and summarises worse.

Are these prices current?

Yes. Every figure on this page is computed from our model pricing data, which is checked daily against each provider's official pricing page. When a provider changes a price, these numbers change with it.

What other AI tasks cost

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Write 1,000 product descriptions
Engineering
Review a 500-line pull request

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