Kimi K3 vs Muse Spark 1.3: scores, price and which to pick

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Our take

Muse Spark 1.3 wins 3 of 4 categories and costs less: 3.0× cheaper for everyday text work. Easy pick.

Overall6568Best

Coding7475Best

Writing6970Best

Support73Best71

Value5262Best

Input / 1M$3.00$1.25Best

Output / 1M$15.00$4.25Best

Blended / 1M$6.00$2.00Best

Context window1M1M

Open weightsYesNo

Released16 Jul 20262 Sept 2026

Your monthly bill

Tasks per month50k

Kimi K3$1.2k

Muse Spark 1.3$400Cheapest

List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.