AI Desk · AI Fingerprinting · Compare
MoonshotAI: Kimi K2.5 · MoonshotAI: Kimi K2.6
MoonshotAI: Kimi K2.5 recordMoonshotAI: Kimi K2.6 recordOpen in the interactive bench
Tokenizer fingerprint
48 of 48 mutually clean strings agree| Test string | MoonshotAI: Kimi K2.5 | MoonshotAI: Kimi K2.6 | Verdict |
|---|---|---|---|
| en-prose | 14 | 14 | match |
| en-long | 16 | 16 | match |
| spaces-20 | 3 | 3 | match |
| spaces-60 | 3 | 3 | match |
| tabs-20 | 4 | 4 | match |
| newlines-20 | 4 | 4 | match |
| mixed-ws | 6 | 6 | match |
| digits-9 | 3 | 3 | match |
| digits-12 | 4 | 4 | match |
| digits-30 | 10 | 10 | match |
| digits-sep | 7 | 7 | match |
| float-long | 9 | 9 | match |
| zh-common | 9 | 9 | match |
| zh-long | 10 | 10 | match |
| zh-rare | 18 | 18 | match |
| ja-kana | 11 | 11 | match |
| ja-kanji | 14 | 14 | match |
| ko | 13 | 13 | match |
| ru | 16 | 16 | match |
| ar | 15 | 15 | match |
| he | 16 | 16 | match |
| hi | 17 | 17 | match |
| th | 21 | 21 | match |
| el | 22 | 22 | match |
| emoji-basic | 10 | 10 | match |
| emoji-skin | 20 | 20 | match |
| emoji-zwj-family | 11 | 11 | match |
| emoji-zwj-x3 | 33 | 33 | match |
| emoji-flags | 14 | 14 | match |
| emoji-prof | 20 | 20 | match |
| math | 26 | 26 | match |
| boxdraw | 24 | 24 | match |
| combining | 14 | 14 | match |
| cjk-ext-b | 16 | 16 | match |
| surrogates | 31 | 31 | match |
| zalgo | 36 | 36 | match |
| rtl-mix | 8 | 8 | match |
| py-code | 25 | 25 | match |
| py-indent | 15 | 15 | match |
| json | 20 | 20 | match |
| html | 16 | 16 | match |
| regex | x | 43 | – |
| camel | 6 | 6 | match |
| snake | 6 | 6 | match |
| rare-word-x5 | 31 | 31 | match |
| repeat-tok | 41 | 41 | match |
| base64 | 33 | 33 | match |
| hex | 11 | 11 | match |
| url | 17 | 17 | match |
| uuid | x | 27 | – |
Values are the marginal prompt-token cost of each string with the model's fixed overhead subtracted. An x marks a row excluded as corrupt for that model.
API surface
The declared serving contracts differ| Field | MoonshotAI: Kimi K2.5 | MoonshotAI: Kimi K2.6 | Verdict |
|---|---|---|---|
| Context length | 262144 | 262144 | ✓ match |
| Max output tokens | – | – | ✓ match |
| Supported parameters | frequency_penalty, include_reasoning, logit_bias, logprobs, max_tokens, min_p, presence_penalty, reasoning, repetition_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_logprobs, top_p | frequency_penalty, include_reasoning, logit_bias, logprobs, max_tokens, min_p, parallel_tool_calls, presence_penalty, reasoning, repetition_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_logprobs, top_p | × differs |
| Defaults | {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null} | {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null} | ✓ match |
| Reasoning contract | {"mandatory":false,"default_enabled":true} | {"mandatory":false,"default_enabled":true} | ✓ match |
| Modalities | text+image->text | text+image->text | ✓ match |
MoonshotAI: Kimi K2.5: OpenRouter's listing shows 235,929 output tokens, which is 90% of the context window, the figure it carries where the provider declares no maximum. MoonshotAI: Kimi K2.6: OpenRouter's listing shows 235,929 output tokens, which is 90% of the context window, the figure it carries where the provider declares no maximum.
Method: tokenizer fingerprinting, v1, 50 strings. This page is static and dated; the interactive bench compares any two of the 338 measured models.