← Back to Model Hub/SIDE-BY-SIDE REVIEW
SHARE THIS:

Kimi K2.5 vs Yi-Lightning

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Kimi K2.5 and Yi-Lightning.

Moonshot AI

Kimi K2.5

Kimi K2.5 is Moonshot AI's native multimodal model, delivering state-of-the-art visual coding capability and a self-directed agent swarm paradigm. Built on Kimi K2 with continued pretraining over approximately 15T mixed...

View Full Specs
01.AI

Yi-Lightning

Yi-Lightning is 01.AI's (離一万物) fastest and most cost-efficient model, purpose-built for high-throughput production workloads. It delivers competitive performance against GPT-4o-mini and Claude Haiku at a fraction of the cost, with exceptional bilingual Chinese-English capabilities. Yi-Lightning excels at classification, entity extraction, summarization, and high-frequency API tasks where latency and cost-per-call are critical constraints.

View Full Specs

Technical Specifications

SpecificationKimi K2.5Yi-Lightning
ProviderMoonshot AI01.AI
Context Window262,144 tokens131,072 tokens
Agent SuitabilityN/A82/100
Time to First Token (TTFT)N/A120 ms
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2026-01-272025-10-01

API Pricing Comparison

Input Price per Million Tokens

Kimi K2.5

$0.38

Yi-Lightning

$0.15

Output Price per Million Tokens

Kimi K2.5

$2.02

Yi-Lightning

$0.30

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Open Live Sandbox Playground

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

MMLUGeneral knowledge & multi-task understanding
8250.0%vsN/A
Kimi K2.5
Yi-Lightning
HumanEvalPython coding & logic synthesis
8300.0%vsN/A
Kimi K2.5
Yi-Lightning
MATHComplex mathematical problem solving
5900.0%vsN/A
Kimi K2.5
Yi-Lightning
GPQAGraduate-level expert reasoning
4100.0%vsN/A
Kimi K2.5
Yi-Lightning
HellaSwagCommonsense reasoning and inference
8400.0%vsN/A
Kimi K2.5
Yi-Lightning
MT-BenchMulti-turn conversation flow quality
880.0%vsN/A
Kimi K2.5
Yi-Lightning

Kimi K2.5 Quirks & Gotchas

No developer gotchas reported.

Yi-Lightning Quirks & Gotchas

  • β–ΈBest cost-efficiency for high-volume bilingual applications
  • β–ΈSelf-hostable via Ollama β€” excellent open-weight option for Asian-language pipelines