kimi-k3 vs gpt-5.6-sol

Pricing, Performance & Features Comparison

kimi-k3

Authormoonshot

Context Length1M

Reasoning

Providers1

ReleasedJul 2026

Knowledge Cutoff–

License–

Moonshot’s 2.8T-parameter flagship for long-horizon coding and knowledge work, with native vision and a 1M-token context window; thinking is always on.

Input$3

Output$15

Latency (p50)5.8s

Output Limit1M

Function Calling

JSON Mode

InputText, Image, Video

OutputText

moonshot

in$3out$15cache$0.3–

Latency (24h)

Success Rate (24h)

gpt-5.6-sol

Authoropenai

Context Length1M

Reasoning

Providers1

ReleasedJul 2026

Knowledge CutoffFeb 2026

License–

Flagship tier of the GPT-5.6 family (Sol), OpenAI’s frontier reasoning model for the most demanding tasks.

Input$5

Output$30

Latency (p50)4.6s

Output Limit128K

Function Calling

JSON Mode

InputText, Image

OutputText

openai

in$5out$30cache$0.5–