gpt-5.6-terra vs kimi-k3

Pricing, Performance & Features Comparison

gpt-5.6-terra

Authoropenai

Context Length1M

Reasoning

Providers1

ReleasedJul 2026

Knowledge CutoffFeb 2026

License–

Mid tier of the GPT-5.6 family (Terra), balancing frontier reasoning quality against cost.

Input$2.5

Output$15

Latency (p50)4s

Output Limit128K

Function Calling

JSON Mode

InputText, Image

OutputText

openai

in$2.5out$15cache$0.25–

Latency (24h)

Success Rate (24h)

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)5.9s

Output Limit1M

Function Calling

JSON Mode

InputText, Image, Video

OutputText

moonshot

in$3out$15cache$0.3–