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Moonshot AI (Kimi)

kimi-k2.6

VS
OpenAI

GPT-5.4 mini

✍️ 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 4.2% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GPT-5.4 mini is 1.0x cheaper to run and delivers 1.0x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GPT-5.4 mini 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 (+4.2%)
58.6%
Reasoning (gpqa-diamond)Winner (+3.0%)
90.5%

Cost & Performance

Cost (per 1M tokens)
$1.71Input: $0.95 | Output: $4.00
Speed
193 tps
Context Window
262.14k tokens
Model Specs

GPT-5.4 mini

Benchmarks & Scores

Coding (swe-bench-pro)
54.4%
Reasoning (gpqa-diamond)
87.5%

Cost & Performance

Cost (per 1M tokens)
$1.69Input: $0.75 | Output: $4.50
Speed
201 tps
Context WindowLarger
400k tokens
Read our data collection methodology

Frequently Asked Questions

GPT-5.4 mini is cheaper than kimi-k2.6. GPT-5.4 mini has a blended cost of $1.69/1M tokens, which is about 1.0x cheaper than kimi-k2.6 at $1.71/1M tokens.

GPT-5.4 mini is faster than kimi-k2.6. GPT-5.4 mini generates 201 tokens per second (tps) compared to kimi-k2.6 which generates 193 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 mini which scores 54.4%.

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