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⚡ Run with API

Ling 3.0 Flash Fin is a finance-focused mixture-of-experts model from inclusionAI, built on Ling 3.0 Flash with 5.1B active out of 124B total parameters and designed for real-world investment work.

Pricing: Input 10.08 credits / 1M tokens (≈ $0.05), Output 29.568 credits / 1M tokens (≈ $0.15).

Prices updated

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This demo page does not include the full memory features of the client. For the complete experience, please use the client or the CLI.

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README
Complete guide to using Ling 3.0 Flash Fin

Ling 3.0 Flash Fin API on ModelFold

Ling 3.0 Flash Fin is a finance-focused mixture-of-experts model from inclusionAI, built on Ling 3.0 Flash with 5.1B active out of 124B total parameters and designed for real-world investment work. Try Ling 3.0 Flash Fin in the ModelFold Playground, then call it from your own code through an OpenAI-compatible chat completions API.

What Is the Ling 3.0 Flash Fin API

Ling 3.0 Flash Fin at a glance

Ling 3.0 Flash Fin is a chat model from inclusionAI. It accepts text as input and returns text, with a context window of up to 262K tokens.

Use it without hosting anything

On ModelFold you call Ling 3.0 Flash Fin with a single API key — no model weights to download and no inference servers to run. The same key also works for the other chat, image, video and audio models on ModelFold.

Core Capabilities of Ling 3.0 Flash Fin

Up to 262K tokens of context

Keep long conversations, large documents and sizeable code in a single request, so the model can reason over the full material instead of fragments.

Function calling

Ling 3.0 Flash Fin supports tool (function) calling: describe your functions in the request and the model returns structured calls your code can run — the basis for agents and integrations.

Reasoning mode

Ling 3.0 Flash Fin can produce reasoning before its final answer; in the Playground you can switch reasoning on or off to compare results.

How to Use Ling 3.0 Flash Fin on ModelFold

  1. 1

    Step 1: Try it in the Playground

    Open the Playground at the top of this page, type a prompt and see how Ling 3.0 Flash Fin responds before writing any code.

  2. 2

    Step 2: Create an API key

    Sign in to ModelFold and create an API key in the console. Keep it secret and send it as a Bearer token.

  3. 3

    Step 3: Send a request

    Call POST https://modelfold.ai/v1/chat/completions with "model": "ling-3-0-flash-fin" and your messages. Existing OpenAI-compatible SDKs work by changing the base URL and key.

  4. ✓

    Step 4: Ship and monitor

    Integrate the response into your product and check token usage and spend for every call in the console logs.

What You Can Build with Ling 3.0 Flash Fin

Enterprise workflows

Automate internal processes such as reporting, knowledge-base Q&A, ticket handling and document review.

Analysis and complex reasoning

Work through research questions, data interpretation, planning and other problems that need careful step-by-step reasoning.

High-volume pipelines

Run classification, extraction, rewriting and batch jobs at scale where cost per request matters.

Tool-calling backends

Route requests, call functions and chain API calls as the worker model inside larger agent systems.

Frequently Asked Questions

What is Ling 3.0 Flash Fin?⌄

Ling 3.0 Flash Fin is a finance-focused mixture-of-experts model from inclusionAI, built on Ling 3.0 Flash with 5.1B active out of 124B total parameters and designed for real-world investment work.

Which inputs does Ling 3.0 Flash Fin support?⌄

Ling 3.0 Flash Fin accepts text and returns text. Through ModelFold you send text messages; documents attached in the Playground are converted to text.

How long is the context window of Ling 3.0 Flash Fin?⌄

Up to 262K tokens, shared between your input and the model’s output.

Does Ling 3.0 Flash Fin support function calling?⌄

Yes. Ling 3.0 Flash Fin supports tools / function calling through the standard tools parameter of the chat completions API.

How is Ling 3.0 Flash Fin billed on ModelFold?⌄

Pay as you go by tokens: input and output tokens are charged at the per-million-token prices shown on this page. There is no monthly fee, and failed requests are not charged.

How do I call Ling 3.0 Flash Fin through the API?⌄

Send a POST request to https://modelfold.ai/v1/chat/completions with "model": "ling-3-0-flash-fin", using your ModelFold API key as the Bearer token.

Rate card
Input10.08 credits 1M tokens≈ $0.05
Output29.568 credits 1M tokens≈ $0.15

Billed per token: input and output are priced separately, and thinking tokens count as output. The Playground charges exactly the same way.

Read API docs →AI Agents · Claude Code / Cursor / Trae →
Quick start
POST/v1/chat/completions
curl https://modelfold.ai/v1/chat/completions \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"ling-3-0-flash-fin","messages":[{"role":"user","content":"Hello"}]}'