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Kimi K2.6 vs GPT-5.6 Sol

For a typical chat reply (2,000 tokens in, 400 out), GPT-5.6 Sol costs 3.0× as much as Kimi K2.6: $8.00 against $2.66 per 1,000 requests at list price on 2026-09-28.

Kimi K2.6GPT-5.6 Sol
Input, per 1M tokens$0.65$2.00
Output, per 1M tokens$3.41$10.00
Context window262K1.05M
Classification or routing (600 tokens in, 10 out), per 1,000$0.424$1.30
Chat reply (2,000 in, 400 out), per 1,000$2.66$8.00
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$6.91$21.00
Confidence signalyesno
Tool callingyesyes
BANKING77, correct of 400323not measured

Which one should carry your traffic?

If Kimi K2.6 answers your requests as well as GPT-5.6 Sol, moving that traffic saves 67% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Kimi K2.6 exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to GPT-5.6 Sol.

Kimi K2.6 profile · GPT-5.6 Sol profile · Measure it on your traffic