LIVE INTELLIGENCE · part of the Xentir AI Index

GPT-5.1 vs Kimi K2.7 Code

GPT-5.1 · OpenAI, released 2025-11-13
Kimi K2.7 Code OPEN WEIGHTS · Moonshot, released 2026-06-12

“Epoch AI, 'AI Benchmarking Hub'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks' [online resource].” · epoch.ai/benchmarks · Licensed CC BY 4.0 · data last verified 2026-07-26 · Methodology · Data Sources

Head-to-head

Measured on 5 of 9 tracked benchmarks for both models — GPT-5.1 leads on 3, Kimi K2.7 Code leads on 2.

Benchmark	GPT-5.1	Kimi K2.7 Code	Leads
Epoch Capabilities Index (ECI)	149.7	149.7	GPT-5.1
SWE-bench Verified	0.669 (high)	Not measured	Not measured on both
GPQA Diamond	0.876 (high)	0.895	Kimi K2.7 Code
MATH Level 5	Not measured	Not measured	Not measured on both
OTIS Mock AIME 2024-2025	0.886 (high)	0.964	Kimi K2.7 Code
FrontierMath	0.310 (high)	Not measured	Not measured on both
FrontierMath Tier 4	0.125 (high)	Not measured	Not measured on both
SimpleQA Verified	0.489 (high)	0.392	GPT-5.1
Chess Puzzles	0.320 (high)	0.210	GPT-5.1

Benchmark results measure specific tasks and should not be treated as a universal measure of model quality. A model with no row here for a benchmark has not been measured on it — that is left blank, never estimated.

Full profiles

GPT-5.1 → · Kimi K2.7 Code → · the full AI Model Rankings table