Compare/Kimi K3 vs GPT-5.6 Terra (Non-reasoning)

Kimi K3vsGPT-5.6 Terra (Non-reasoning)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

Kimi

Kimi K3

Input
$3/M
Output
$15/M
Speed
59 tok/s
TTFT
1.35s
OpenAI

GPT-5.6 Terra (Non-reasoning)

Input
$2.5/M
Output
$15/M
Speed
101 tok/s
TTFT
0.66s

Winner by Category

Cheaper
GPT-5.6 Terra (Non-reasoning)
Faster (tok/s)
GPT-5.6 Terra (Non-reasoning)
Lower Latency
GPT-5.6 Terra (Non-reasoning)
Benchmarks (5-0)
Kimi K3

Pricing Comparison

MetricKimi K3GPT-5.6 Terra (Non-reasoning)
Input ($/M tokens)$3$2.5
Output ($/M tokens)$15$15
Cost for 1M input + 100K output tokens:
Kimi K3$4.50
GPT-5.6 Terra (Non-reasoning)$4.00

Speed Comparison

Output Speed (tokens/s) — higher is better
Kimi K3
59 tok/s
GPT-5.6 Terra (Non-reasoning)
101 tok/s
Time to First Token (seconds) — lower is better
Kimi K3
1.35s
GPT-5.6 Terra (Non-reasoning)
0.66s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
57.134.0
Coding Index
76.252.3
Math Index
GPQA Diamond
93.5%74.6%
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
44.3%11.0%
SciCode
58.7%44.6%
IFBench
TerminalBench
Kimi K35 wins
0 winsGPT-5.6 Terra (Non-reasoning)

Frequently Asked Questions

Which is cheaper, Kimi K3 or GPT-5.6 Terra (Non-reasoning)?

GPT-5.6 Terra (Non-reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $5.63/M tokens vs $6.00/M for Kimi K3.

Which model performs better on benchmarks?

Kimi K3 wins 5 out of 12 benchmarks compared to 0 for GPT-5.6 Terra (Non-reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.6 Terra (Non-reasoning) generates tokens faster at 101 tok/s vs 59 tok/s. However, GPT-5.6 Terra (Non-reasoning) has lower time-to-first-token (0.66s vs 1.35s).

When should I use Kimi K3 vs GPT-5.6 Terra (Non-reasoning)?

Choose based on your priorities: GPT-5.6 Terra (Non-reasoning) for lower cost, Kimi K3 for stronger benchmark performance, and GPT-5.6 Terra (Non-reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.