inclusionAI: Ling 3.1 Flash
Ling 3.1 Flash is a reasoning model from inclusionAI released on Sep 29, 2026. It reads text and writes text, with a 262K token context window and up to 33K tokens per reply.
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It costs $0.30 per million input tokens and $0.90 per million output tokens. Cached input bills at $0.06, 80% less than fresh input.
It supports tool calling, structured JSON output and prompt caching.
6 providers serve it, including Novita AI, Vercel AI Gateway and NanoGPT. The lowest input price is $0.075 per million tokens at NanoGPT.
- Modalities
- In / out price
- $0.30 / $0.90 per 1M
- Context
- 262K
- Max output
- 33K
- Released
- Sep 29, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Ling 3.1 Flash pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.30 / 1M tokens | |
|---|---|---|
| Output | $0.90 / 1M tokens | |
| Cached input (read) | $0.06 / 1M tokens | 80% off input |
Ling 3.1 Flash providers
6 providers serve it, including Novita AI, Vercel AI Gateway and NanoGPT. The lowest input price is $0.075 per million tokens at NanoGPT. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Novita AI | $0.30 | $0.90 | $0.06 | 262K | 262K |
| Vercel AI Gateway | $0.30 | $0.90 | $0.06 | 262K | 33K |
| NanoGPT | $0.075 | $0.22 | $0.015 | 262K | 33K |
| Kilo Gateway | $0.30 | $0.90 | $0.06 | 262K | 236K |
| DevPass (LLM Gateway) | n/a | n/a | – | 262K | 33K |
| LLM Gateway | n/a | n/a | – | 262K | 33K |
What Ling 3.1 Flash costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Ling 3.1 Flash through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning
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Ling 3.1 Flash questions
How much does the Ling 3.1 Flash API cost?
$0.30 per million input tokens and $0.90 per million output tokens, with cached input at $0.06. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Ling 3.1 Flash?
262,144 tokens of input, and it can write up to 32,768 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Ling 3.1 Flash?
6 providers serve it, including Novita AI, Vercel AI Gateway and NanoGPT. The lowest input price is $0.075 per million tokens at NanoGPT. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Ling 3.1 Flash support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Ling 3.1 Flash open source?
No. inclusionAI serves it through an API only, so you cannot download the weights or host it yourself.
When was Ling 3.1 Flash released?
Sep 29, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.
Building on Ling 3.1 Flash?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
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