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Claude Sonnet 4.6 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 Claude Sonnet 4.6 and Yi-Lightning.

Anthropic

Claude Sonnet 4.6

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...

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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

SpecificationClaude Sonnet 4.6Yi-Lightning
ProviderAnthropic01.AI
Context Window1,000,000 tokens131,072 tokens
Agent Suitability94/10082/100
Time to First Token (TTFT)350 ms120 ms
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2026-02-172025-10-01

API Pricing Comparison

Input Price per Million Tokens

Claude Sonnet 4.6

$3.00

Yi-Lightning

$0.15

Output Price per Million Tokens

Claude Sonnet 4.6

$15.00

Yi-Lightning

$0.30

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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
9040.0%vsN/A
Claude Sonnet 4.6
Yi-Lightning
HumanEvalPython coding & logic synthesis
9370.0%vsN/A
Claude Sonnet 4.6
Yi-Lightning
MATHComplex mathematical problem solving
8230.0%vsN/A
Claude Sonnet 4.6
Yi-Lightning
GPQAGraduate-level expert reasoning
6500.0%vsN/A
Claude Sonnet 4.6
Yi-Lightning
HellaSwagCommonsense reasoning and inference
9600.0%vsN/A
Claude Sonnet 4.6
Yi-Lightning
MT-BenchMulti-turn conversation flow quality
940.0%vsN/A
Claude Sonnet 4.6
Yi-Lightning

Claude Sonnet 4.6 Quirks & Gotchas

  • β–ΈBest balance of speed and capability β€” default for most Claude integrations
  • β–ΈComputer-use (beta) feature enables autonomous UI interaction

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