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Moonshot AI (Kimi)

kimi-k2.6

VS
OpenAI

GPT-5.4 Pro

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, kimi-k2.6 is the premium intelligence choice, scoring 58.6% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GPT-5.4 Pro is 12.5x cheaper to run. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GPT-5.4 Pro offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of kimi-k2.6 fully justifies the cost.

Model Specs

kimi-k2.6

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
58.6%
Reasoning (gpqa-diamond)Winner (+22.9%)
90.5%

Cost & Performance

Cost (per 1M tokens)
$1.71Input: $0.95 | Output: $4.00
Speed1.4x faster
193 tps
Context Window
262.14k tokens
Model Specs

GPT-5.4 Pro

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
67.6%

Cost & Performance

Cost (per 1M tokens)12.5x cheaper
$0.14Input: $0.05 | Output: $0.40
Speed
137 tps
Context WindowLarger
400k tokens
Read our data collection methodology

Frequently Asked Questions

GPT-5.4 Pro is cheaper than kimi-k2.6. GPT-5.4 Pro has a blended cost of $0.14/1M tokens, which is about 12.5x cheaper than kimi-k2.6 at $1.71/1M tokens.

kimi-k2.6 is faster than GPT-5.4 Pro. kimi-k2.6 generates 193 tokens per second (tps) compared to GPT-5.4 Pro which generates 137 tokens per second.

kimi-k2.6 is better for coding tasks. It scores 58.6% on coding evaluations (swe-bench-pro) compared to GPT-5.4 Pro which scores N/A.

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