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Getting Started

Credits & Pricing

LDX hub uses a credit-based billing system. Credits are consumed each time you process data through the API. The number of credits consumed depends on the service, model or product you choose, and the volume of data processed.

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How Credits Work

One credit costs $0.0001.

Credit consumption varies by service type:

StructFlow / RefineLoop — billed per character:

Code
credits = (input_characters × input_rate
         + output_characters × output_rate
         + vector_bytes × vector_bytes_rate) / 1000

RenderOCR / CastDoc — billed per page:

Code
credits = input_pages × rate

AnalyzeDoc — billed per page, plus generated output characters. PDF inputs additionally incur input character charges:

Code
credits = input_pages × page_rate
        + output_characters × output_rate / 1000
        + input_characters × input_rate / 1000

• page_rate depends on the model and its resolution variant (@high / @medium / @low) and is applied directly per page.
• Image inputs (JPEG, PNG) count as 1 page and carry no input characters — only the page and output terms apply.
• PDF inputs are billed per page plus the extracted input characters. For Google Gemini and Amazon Nova models the input character rate is 0 (these models normalize text into the page budget), so PDF is effectively billed per page only.

For example, using Google Gemini 3.5 Flash (google/gemini-3.5-flash) with 10,000 input characters and 10,000 output characters:

Code
credits = (10,000 × 45 + 10,000 × 270) / 1000
        = 3,150

So 10,000 input characters and 10,000 output characters consumes 3,150 credits.

Note for RefineLoop: Actual credit consumption is significantly higher than the formula above suggests. RefineLoop processes each segment multiple times (up to 6 iterations by default), and each iteration includes both source and target text. As a result, the actual input_characters charged can be several times the length of the original XLIFF content.

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Model & Product Rates

StructFlow

Model	Input Rate	Output Rate	Vector Bytes Rate
openai/gpt-5.6-sol	150	900	3
openai/gpt-5.6-terra	75	450	3
openai/gpt-5.6-luna	30	180	3
openai/gpt-5.5	150	900	3
openai/gpt-5.4	75	450	3
openai/gpt-5.4-mini	23	135	3
azure/gpt-5.6-sol	180	1080	4
azure/gpt-5.6-terra	90	540	4
azure/gpt-5.6-luna	36	216	4
azure/gpt-5.4	90	540	4
azure/gpt-5.4-mini	27	162	4
google/gemini-3.5-flash	45	270	4
google/gemini-3.1-pro-preview	60	360	4
google/gemini-3-flash-preview	15	90	4
anthropic/claude-fable-5	300	1500	—
anthropic/claude-sonnet-5	90	450	—
anthropic/claude-opus-4-8	150	750	—
anthropic/claude-opus-4-7	150	750	—
anthropic/claude-sonnet-4-6	90	450	—
bedrock/global.amazon.nova-2-lite-v1:0	9	75	—
xai/grok-4.5	60	180	—
xai/grok-4.3	38	75	—
xai/grok-4.20-non-reasoning	38	75	—

AnalyzeDoc

Billed per page based on the model's resolution variant, plus output characters. PDF inputs also incur input character charges (zero-rated for Gemini and Nova).

Model	Page Rate	Output Rate	PDF Input Rate
openai/gpt-5.6-sol@high	602	900	150
openai/gpt-5.6-sol@low	63	900	150
openai/gpt-5.6-terra@high	301	450	75
openai/gpt-5.6-terra@low	32	450	75
openai/gpt-5.6-luna@high	121	180	30
openai/gpt-5.6-luna@low	13	180	30
openai/gpt-5.5@high	602	900	150
openai/gpt-5.5@low	63	900	150
openai/gpt-5.4@high	301	450	75
openai/gpt-5.4-mini@high	91	135	23
azure/gpt-5.6-sol@high	334	1080	180
azure/gpt-5.6-sol@low	76	1080	180
azure/gpt-5.6-terra@high	167	540	90
azure/gpt-5.6-terra@low	38	540	90
azure/gpt-5.6-luna@high	67	216	36
azure/gpt-5.6-luna@low	16	216	36
azure/gpt-5.4@high	167	540	90
azure/gpt-5.4@low	38	540	90
azure/gpt-5.4-mini@high	51	162	27
azure/gpt-5.4-mini@low	12	162	27
google/gemini-3.5-flash@high	66	270	0
google/gemini-3.5-flash@medium	32	270	0
google/gemini-3.5-flash@low	16	270	0
anthropic/claude-fable-5	1909	1500	300
anthropic/claude-sonnet-5	573	450	90
anthropic/claude-opus-4-8	955	750	150
bedrock/global.amazon.nova-2-lite-v1:0	4	75	0

Page Rate is applied directly per page. Output Rate and PDF Input Rate are divided by 1,000 (per character). Higher resolution variants read dense layouts and fine print more accurately at a higher per-page cost.

RefineLoop

Model	Input Rate	Output Rate	Vector Bytes Rate
openai/gpt-5.6-sol	150	900	3
openai/gpt-5.6-terra	75	450	3
openai/gpt-5.6-luna	30	180	3
openai/gpt-5.5	150	900	3
openai/gpt-5.4	75	450	3
openai/gpt-5.4-mini	23	135	3
azure/gpt-5.6-sol	180	1080	4
azure/gpt-5.6-terra	90	540	4
azure/gpt-5.6-luna	36	216	4
azure/gpt-5.4	90	540	4
azure/gpt-5.4-mini	27	162	4
google/gemini-3.5-flash	45	270	4
google/gemini-3.1-pro-preview	60	360	4
google/gemini-3-flash-preview	15	90	4
anthropic/claude-fable-5	300	1500	—
anthropic/claude-sonnet-5	90	450	—
anthropic/claude-opus-4-8	150	750	—
anthropic/claude-opus-4-7	150	750	—
anthropic/claude-sonnet-4-6	90	450	—
bedrock/global.amazon.nova-2-lite-v1:0	9	75	—
xai/grok-4.5	60	180	—
xai/grok-4.3	38	75	—
xai/grok-4.20-non-reasoning	38	75	—

Rates are divided by 1,000 to calculate actual credit consumption per character.

Vector Bytes Rate applies when using external reference files. Consumption is calculated per byte of the reference file.

RenderOCR

Product	Page Rate
ki/ocr	320

Rate is applied directly per page (not divided by 1,000).

CastDoc

Product	Page Rate
ki/cast	320

Rate is applied directly per page (not divided by 1,000).

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Capacity by Plan

Example: StructFlow with Google Gemini 3.5 Flash

The following estimates are based on Google Gemini 3.5 Flash (google/gemini-3.5-flash) with a 1:1 input/output ratio. Actual consumption varies depending on model choice, input/output ratio, and content length.

Plan	Credits	Input Characters (est.)
Free	25,000	~79,000
Starter	150,000	~476,000
Standard	520,000	~1,650,000
Pro	1,700,000	~5,396,000

Example: AnalyzeDoc with Google Gemini 3.5 Flash @high

The following estimates are based on Google Gemini 3.5 Flash @high (google/gemini-3.5-flash@high), assuming a single-page document that produces ~500 characters of extracted JSON. Each document costs 66 (page) + 500 × 270 / 1,000 (output) = 201 credits. Actual consumption varies with document size, model, resolution variant, and output length.

Plan	Credits	Documents (est.)
Free	25,000	~124
Starter	150,000	~746
Standard	520,000	~2,587
Pro	1,700,000	~8,457

Example: RenderOCR with KI OCR

Plan	Credits	Pages (est.)
Free	25,000	~78
Starter	150,000	~468
Standard	520,000	~1,625
Pro	1,700,000	~5,312

Example: CastDoc with KI Cast

Plan	Credits	Pages (est.)
Free	25,000	~78
Starter	150,000	~468
Standard	520,000	~1,625
Pro	1,700,000	~5,312

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Notes

• Credits are reset monthly at the start of each billing period.
• Unused credits do not carry over to the next period.
• On paid plans, additional usage beyond the included credits is billed at $0.0001 per credit.