Kimi K2.8 Preview

SyncDev model directory · Profile updated Oct 13, 2026

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Kimi K2.8 Preview from Moonshot AI: Kimi coding model with more efficient thinking and up to 1M context, available through Kimi Code.

Key specifications

Context window
1.05M
License
Proprietary

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
  • Image input
  • Video input

Produces

  • Text output

Capabilities

ReasoningFunction callingVision

What is Kimi K2.8 Preview?

What Kimi K2.8 Preview is for

Kimi coding model with more efficient thinking and up to 1M context, available through Kimi Code. The registry places it in the kimi-k2 family with a release date of 2026-09-11. This profile describes its documented interface and how to evaluate it for the intended task.

Inputs and request limits

The recorded inputs are text, image and video, with text output. The registry lists a 1,048,576-token context window. It also declares reasoning and function calling. These are specifications, not a measured quality or speed ranking. A host can impose its own request limits and support a different subset of features.

Deployment and cost

Kimi K2.8 Preview is recorded as a hosted model without downloadable weights. Confirm the current model ID and access conditions on the chosen API. A registry listing alone does not establish that an account or region has access.

No independently checked token rate is added from a hosting alias. Use the route’s current price and billing unit when comparing cost, including output, reasoning, cache behavior and retries where applicable.

What to test

Test photographs, screenshots and documents with the detail your application needs to read. Include small text, crowded layouts and questions whose answer is absent. Check whether the answer is supported by the image instead of accepting a plausible description.

Evidence and related models

This is a registry-sourced profile. A model-specific publisher document has not yet been confirmed; access and specifications should be checked before an integration decision. SyncDev has not independently benchmarked Kimi K2.8 Preview.

Browse Moonshot AI models, explore related tasks, or compare two models using the same workload.

How to evaluate Kimi K2.8 Preview

Compare the model on the work you need to complete.

Tasks and inputs

Kimi K2.8 Preview is listed for Image-text-to-text, Text generation, Video-text-to-text. It accepts text, image, video and produces text. Use the publisher’s input format and preprocessing for your chosen deployment.

Capacity and cost

Documented limits: 1.05M context. 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

Kimi K2.8 Preview from Moonshot AI: Kimi coding model with more efficient thinking and up to 1M context, available through Kimi Code.

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