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Grok 4.3 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 Grok 4.3 and Yi-Lightning.

xAI

Grok 4.3

Grok 4.3 is a reasoning model from xAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...

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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.

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Technical Specifications

SpecificationGrok 4.3Yi-Lightning
ProviderxAI01.AI
Context Window1,000,000 tokens131,072 tokens
Agent Suitability87/10082/100
Time to First Token (TTFT)400 ms120 ms
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2026-04-302025-10-01

API Pricing Comparison

Input Price per Million Tokens

Grok 4.3

$1.25

Yi-Lightning

$0.15

Output Price per Million Tokens

Grok 4.3

$2.50

Yi-Lightning

$0.30

Want to test both models live?

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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
9240.0%vsN/A
Grok 4.3
Yi-Lightning
HumanEvalPython coding & logic synthesis
9450.0%vsN/A
Grok 4.3
Yi-Lightning
MATHComplex mathematical problem solving
9100.0%vsN/A
Grok 4.3
Yi-Lightning
GPQAGraduate-level expert reasoning
8100.0%vsN/A
Grok 4.3
Yi-Lightning
HellaSwagCommonsense reasoning and inference
9750.0%vsN/A
Grok 4.3
Yi-Lightning
MT-BenchMulti-turn conversation flow quality
940.0%vsN/A
Grok 4.3
Yi-Lightning

Grok 4.3 Quirks & Gotchas

  • β–ΈStrong coding performance β€” competitive with Claude Sonnet at similar price point
  • β–ΈUpgrade to Grok 4.20 for improved reasoning and tool calling

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