Yi Lightning vs Yi Large

Compare Yi Lightning and Yi Large: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

Updated 2026-05-21 · By Abhishek Raj · Our methodology

All 01.AI models All 01.AI models What is an LLM API? Python Quickstart What is inference?
Feature Yi Lightning Yi Large
CategoryOpen SourceOpen Source
Parameters200B MoE300B
Context Window128K200K
Input Price$0.04/1M tokens$0.06/1M tokens
Output Price$0.08/1M tokens$0.12/1M tokens
Latency~300ms~450ms

Choose Yi Lightning when:

  • ✓ High-volume APIs
  • ✓ Fast Q&A
  • ✓ Real-time chatbots
Key Strengths:

Fast inference, Good multilingual, Strong reasoning

Choose Yi Large when:

  • ✓ Long document analysis
  • ✓ Research
  • ✓ Complex tasks
Key Strengths:

200K context, Strong analysis, Good reasoning

Verdict: Yi Lightning vs Yi Large

For cost efficiency, Yi Lightning wins at $0.04/1M input tokens. For speed, Yi Lightning is faster at ~300ms. Yi Lightning excels at High-volume APIs while Yi Large is better for Long document analysis. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.

Detailed Analysis

Pricing Comparison

Yi Lightning costs $0.04/1M input tokens and $0.08/1M output tokens. Yi Large costs $0.06 input and $0.12 output. Yi Lightning is 1.5x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

Yi Lightning has a 128K context window with ~300ms latency. Yi Large offers 200K context at ~450ms. Yi Large has the larger context window.

Best For

Yi Lightning (Open Source) is optimized for: High-volume APIs, Fast Q&A, Real-time chatbots. Yi Large (Open Source) works best for: Long document analysis, Research, Complex tasks.

Try Both on XALEN

Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:

from xalen import XALEN

client = XALEN(api_key="xln_test_YOUR_KEY")

# Use Yi Lightning
response_a = client.chat.completions.create(
    model="yi-lightning",
    messages=[{"role": "user", "content": "Your question here"}]
)

# Use Yi Large
response_b = client.chat.completions.create(
    model="yi-large",
    messages=[{"role": "user", "content": "Your question here"}]
)

Start Building with XALEN

200+ AI models. One API. Pay-as-you-go.

Get API Key Try in Playground

Frequently Asked Questions

Which is better, Yi Lightning or Yi Large?

Yi Lightning (Open Source, 200B MoE) offers Fast inference. Yi Large (Open Source, 300B) offers 200K context. Choose Yi Lightning for High-volume APIs or Yi Large for Long document analysis.

How much does Yi Lightning cost vs Yi Large?

Yi Lightning: $0.04/1M input, $0.08/1M output. Yi Large: $0.06/1M input, $0.12/1M output. Both available on XALEN with batch processing at 50% discount.

Can I use both models on XALEN?

Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between Yi Lightning and Yi Large by changing the model parameter. No code changes needed.

Related Comparisons

Yi Lightning vs Gemma 3 27B Yi Lightning vs Llama 4 Scout Yi Lightning vs Llama 4 Maverick Yi Lightning vs Llama 3.3 70B Yi Lightning vs Llama 3.1 405B Yi Lightning vs Llama 3.1 70B Turbo

Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.