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Financial Document Token Estimator

Financial document token estimator: price 10-K, 10-Q, 8-K and earnings call runs across 10 frontier LLMs. Context-fit + one-pass + peer synthesis cost.

Transparent by design — computed in your browser from a published formula and sourced rates, not a black box. Data verified May 25, 2026. Sources: Anthropic pricing ↗ · OpenAI pricing ↗ · Google AI / Gemini pricing ↗ Full methodology →

Inputs
Form inputs / CSV
Runtime
Instant
Privacy
Client-side · no upload
API key
Not required
Methodology
Open →

Education · Not investment advice. BaFin/EU framework. Past performance does not indicate future results. Editorial standards Sponsor disclosure Corrections

1 · Configure the document

Business + MD&A + risk factors body, excluding exhibits.

50%

One-pass run

18.0K

input tokens · cheapest at $0.0017 on Gemini 2.5 Flash-Lite · 163.6× spread to priciest

Priciest: $0.282 on Claude Opus 4.1 (retired, prior generation)  ·  Output: 1.5K tok

2 · Cost per model

ModelInput tokensOutput tokensCache-readOne-pass costSynthesis costContextFits
Gemini 2.5 Flash-Litegoogle18.0K1.5K9.0K$0.00171M
Gemini 2.5 Flashgoogle18.0K1.5K9.0K$0.00711M
GPT-5.4 miniopenai18.0K1.5K9.0K$0.017256K
Claude Haiku 4.5anthropic20.6K1.5K10.3K$0.019200K
Gemini 2.5 Progoogle18.0K1.5K9.0K$0.0292M
Gemini 3.5 Flashgoogle18.0K1.5K9.0K$0.0301M
Claude Sonnet 4.6anthropic20.6K1.5K10.3K$0.0561M
Claude Opus 4.8anthropic20.6K1.5K10.3K$0.0941M
GPT-5.5openai18.0K1.5K9.0K$0.113400K
Claude Opus 4.1 (retired, prior generation)anthropic20.6K1.5K10.3K$0.282200K

Sorted cheapest first on one-pass cost. Input-token count differs slightly per provider because each tokenizer has a different char-per-token ratio.

Approximation notes

Tokenization varies per model. Estimates use published char-per-token ratios from vendor docs (Anthropic ~3.5, OpenAI ~4.0, Gemini ~4.0). For precise counts, use tiktoken (OpenAI) or Anthropic’s count_tokens endpoint. Pricing last verified 2026-04-23.

See methodology for the full rate table, formulas, and archetype assumptions.

How to use

Step-by-step

Full calculator guide →
  1. 1

    Pick an archetype (10-K, 10-Q, 8-K, or earnings call) for a representative estimate, or paste the actual document text (up to about 50,000 characters).

  2. 2

    Read the token estimate. Pasted text is counted exactly (characters divided by the model's tokenizer ratio); archetypes use a representative mid-range count (the 10-K preset is around 18,000 tokens).

  3. 3

    Check the Fits column — it flags, per model, whether the document overflows that model's context window (windows range from about 200K to 2M tokens). Documents that don't fit need chunking; see the SEC Filing Chunk Optimizer.

  4. 4

    Read the one-pass extraction cost across all ten models, and toggle the cache-hit rate to see recurring-pipeline economics.

  5. 5

    Multiply per-document cost by your monthly document volume to size the bill. For batch optimization across models, pair with the Token Cost Optimizer.

For agents

Use in an agent

Same math, same result shape as the UI above — as a static ES module. No HTTP request, no auth, no rate limit.

import { compute } from "https://aifinhub.io/engines/financial-document-token-estimator.js";

Contract: /contracts/financial-document-token-estimator.json Full agent guide →

Glossary references

Terms used by this tool

All glossary →

Questions people ask next

FAQ

What documents does it support?

Four archetype presets — 10-K, 10-Q, 8-K, and earnings call transcript — or you can paste raw text (up to about 50,000 characters) to estimate directly. There is no file upload and no page-count input: pick an archetype for a representative estimate, or paste the actual text for a precise character-based count.

How accurate is the estimate?

The paste-text path is exact for the characters you provide — it counts characters and divides by the model's tokenizer ratio. The archetype presets are representative mid-range samples, and real filings of the same type span an order of magnitude (a large-cap 10-K with full exhibits can exceed 40,000 tokens), so treat a preset number as a starting estimate, not a guarantee.

Why does token count matter for finance use?

Two reasons: (1) cost — input tokens drive LLM API cost, so you estimate before deciding to process the doc; (2) feasibility — context windows range from about 200K to 2M tokens across the models shown, and the Fits column flags, per model, whether a document overflows. Documents that don't fit need chunking.

How do I estimate without pasting the full text?

Pick the closest archetype (10-K, 10-Q, 8-K, or earnings call). Each preset carries a representative token count baked in from typical filings — the 10-K preset is around 18,000 tokens. There is no tokens-per-page or page-count path; for a precise number, paste the actual text and the tool counts characters divided by the model's tokenizer ratio.

Does it work for non-English filings?

The character-to-token ratios assume English prose (about 3.5–4 characters per token). Other languages tokenize differently — CJK text is denser, agglutinative languages sparser — so estimates for non-English text are rougher. There is no language selector: the ratio is fixed per model.

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