Ling 3.1 Flash

SyncDev model directory · Profile updated Oct 13, 2026

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Ling 3.1 Flash is inclusionAI’s hybrid reasoning model for coding and tool agents, available through a hosted AI Gateway route.

Key specifications

Specification score
51.3
Context window
262.14K
Max output
32.77K
License
Publisher API terms
Parameters
25B active / 560B total

The specification score summarizes recorded features and limits. It is not a benchmark result.

Inputs and outputs

Recorded modality support shows what this model can accept and produce. An undocumented modality is shown as unknown rather than assumed to be unsupported.

Accepts

  • Text input

Produces

  • Text output

Capabilities

ReasoningFunction callingStreaming

What is Ling 3.1 Flash?

Ling 3.1 Flash is inclusionAI’s hybrid reasoning model for coding and tool agents, available through a hosted AI Gateway route.

Hosted reasoning and tool use

Ling 3.1 Flash has 560B total parameters and 25B active parameters per token. AI Gateway documents text input and output, a 262,144-token context and a 32,768-token output limit for its hosted route. Those limits describe this service and should not be copied to an unrelated inclusionAI checkpoint.

Connecting an application

Use inclusionai/ling-3.1-flash for the standard gateway route. Tool definitions belong to the application, which must validate arguments and handle execution results. Reasoning tokens count toward the output allowance, so leave room for the final answer when testing a difficult task. Retain enough history for the agent to see completed actions and outstanding requirements.

Promotional access

The provider advertises temporary free access. The standard identifier begins billing when the promotion ends; the separate inclusionai/ling-3.1-flash-free identifier stops serving instead. This profile leaves permanent token prices unknown rather than presenting a short promotion as a lasting rate.

What to compare

Try an issue triage, a repository change and a document synthesis with the same tools and success criteria used by your existing assistant. Record accepted results, tool errors, reasoning usage and total completion time. A fast individual response is less useful if the agent needs repeated corrections to finish the task.

Sources

Model documentation · Model documentation

How to evaluate Ling 3.1 Flash

Compare the model on the work you need to complete.

Tasks and inputs

Ling 3.1 Flash is listed for Text generation. It accepts text and produces text. Use the publisher’s input format and preprocessing for your chosen deployment.

Capacity and cost

Documented limits: 262.14K context and 32.77K maximum output. Measure a completed task using the prompts, documents and tools your application will use. Include reasoning and retries in the result.

Choosing a deployment

Use the model identifier and account requirements for the selected API route. Confirm its request limits and output format with one complete task before connecting a larger workflow.

Frequently asked questions

inclusionai/ling-3.1-flash is the identifier documented for the route described here.

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