How do Kimi K3 and GPT-5.5 compare on coding benchmarks?

The comparison table shows SWE-bench, SWE-Pro, SWE-Atlas, Terminal-Bench, DeepSWE, and coding agent index scores for both Kimi K3 and GPT-5.5 when publicly disclosed.

LLM Comparison

Kimi K3 vs GPT-5.5: benchmark scores, pricing & comparison.

Q: Which is better: Kimi K3 or GPT-5.5?

AskClash compares Kimi K3 and GPT-5.5 side by side across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, and context window so you can see which model wins on each benchmark.

Side-by-side Kimi K3 vs GPT-5.5 comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.

Open live leaderboard Kimi K3 model page GPT-5.5 model page

Rank #3 vs #7AskClash overall scores 82.3 vs 76.9.

Pricing $3.00/$15.0 vs $5.00/$30.0Input and output token prices per 1M tokens when published.

Open Weight vs ProprietaryMoonshot AI vs OpenAI.

Kimi K3 vs GPT-5.5 benchmark comparison

Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.

Metric	Kimi K3	GPT-5.5
Overall Score	82.3	76.9
Leaderboard Rank	#3	#7
RWT	—	8.0
Coding Agent Index	—	76.4
HLE	43.5	52.2
GPQA	93.5	93.6
SWE-Pro	—	58.6
Terminal-Bench	88.3	82.7
DeepSWE	67.5	67.0
OSWorld	—	78.7
MCP Atlas	84.2	75.3
Finance Agent	—	51.8
CharXiv	84.8	—
MMMU-Pro	81.6	81.2
ARC-AGI 2	—	85.0
Tau2	—	98.0
Input Price (per 1M tokens)	$3.00	$5.00
Output Price (per 1M tokens)	$15.0	$30.0
Context Window	1M	1M
Benchmarks Published	9	13

Kimi K3 vs GPT-5.5 head-to-head charts

Kimi K3 leads 5 and GPT-5.5 leads 2 of 7 shared benchmarks. Kimi K3 is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Kimi K3GPT-5.5

Overall

82.3Kimi K3

76.9GPT-5.5

HLE

43.5Kimi K3

52.2GPT-5.5

GPQA

93.5Kimi K3

93.6GPT-5.5

Terminal-Bench

88.3Kimi K3

82.7GPT-5.5

DeepSWE

67.5Kimi K3

67.0GPT-5.5

MCP Atlas

84.2Kimi K3

75.3GPT-5.5

MMMU-Pro

81.6Kimi K3

81.2GPT-5.5

Kimi K3

Input$3.00

Output$15.0

Workload$6.00

Context1M

GPT-5.5

Input$5.00

Output$30.0

Workload$11

Context1M

Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.

More Kimi K3 and GPT-5.5 comparisons

Explore how Kimi K3 and GPT-5.5 stack up against other top-ranked LLMs.

Claude Fable 5 vs Kimi K3 Claude Fable 5 vs GPT-5.5 GPT-5.6 Sol vs Kimi K3 GPT-5.6 Sol vs GPT-5.5 Kimi K3 vs Claude Opus 4.8 Claude Opus 4.8 vs GPT-5.5 Kimi K3 vs Grok 4.5 Grok 4.5 vs GPT-5.5 Kimi K3 vs Muse Spark 1.1 Muse Spark 1.1 vs GPT-5.5

How to read this comparison

Benchmark scores

Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.

Token pricing

Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.

Coverage matters

Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.

This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.