Local token estimate - source-backed caveats
Paste text locally, reserve answer space, and separate the advertised context ceiling from the product tier and runtime that actually expose it.
Page video
The video is paired with page-specific captions so the moving layer explains the same source-backed path as the text.
Paste text locally, reserve answer space, and separate the advertised context ceiling from the product tier and runtime that actually expose it.
Context planner
This is not an official tokenizer. It is a planning aid for spotting oversized prompts before you submit them.
Useful interpretation
Every text section is paired with a visual model so the page can be scanned as a decision guide, not just read as an essay.
The source ledger tracks official 1M-context language, Kimi model-mode details and Kimi Code configuration. For production, test retrieval accuracy, citation fidelity and latency across the actual provider mode.
Long prompts fail quietly when no room remains for reasoning, tool output or the final answer. Use the planner to reserve completion space and trim repeated appendices before sending.
The source scan notes K2.6, K3 and K3 Cluster differences, membership boundaries and reasoning-intensity tradeoffs. Keep those product details next to every context claim.
Source notes
External references are kept here as source notes. They support the page but do not replace the on-page decision tools.
Use this for model identity, 2.8T scale, KDA, Attention Residuals, native vision, 1M context, and the pending technical report boundary.
Use this for K2.6, K3, K3 Cluster differences, reasoning intensity, and the 1M-context membership boundary.
Use this for reasoning effort, max completion tokens, streaming, vision input, structured output, tools, and limitations.
Use this for Kimi Code model ID, 1M context configuration, and OpenAI/Anthropic compatible coding endpoints.
Use this for multimodal input, output formats, product modes, and visitor-facing capability boundaries.
FAQ
Short answers keep limits, dates and source boundaries explicit.
No. The estimator runs in the browser and does not send pasted text to the server.
No. It is a planning estimate until the exact tokenizer and provider usage fields are checked.
A prompt that fills the whole context window can leave too little space for reasoning, tools or the final answer.
Next decisions
Move to the neighboring decision instead of restarting from a search result.