Is Kimi K2.5 a good deal?

As of Sep 23, 2026, Kimi K2.5 is dominated for Balanced on LMArena. GLM 5.3 Flash scores 26.3 higher and costs 74% less, with a covering envelope. 13 of 136 rated, priced standard models are undominated.

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GLM 5.3 Flash is both better and cheaper than Kimi K2.5: 26.3 points higher on LMArena and 74% less per million tokens, $0.66 cheaper at this mix.

Kimi K2.5 takes text, image, returns up to 235,929 tokens from a 262,144-token context, and is listed by 5 sellers.

Compared against 136 rated, priced models on this lens: 1 model dominates it and gives up nothing, 2 more dominate it but give something up. Kimi K2.5 scores 1445.6 at $0.90 per million tokens for this mix.

Envelope-safe replacements

Each row scores at least as high, costs no more, and covers this model’s context, output, modalities, tools, and reasoning. A cheaper narrower model is not listed here.

Model	LMArena	Effective $/M	You save
GLM 5.3 Flash	1471.9 +26.3	$0.237/M	74%

Higher score, lower price, named losses

Not a drop-in. The loss is why these are not a recommendation.

Model	LMArena	Effective $/M	You give up
MiMo-V2.5-Pro	1464.8	$0.544/M	max output, image
Qwen3.7 Plus	1454.2	$0.560/M	max output

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