LLMversus

InternLM 2.5 20B vs Yi-Lightning: Pricing, Benchmarks & Verdict (2026)

Pricing verified Sep 14, 2026By LLMversusUpdated September 17, 2026View methodology

⚡ Quick Answer

Compare InternLM 2.5 20B and Yi-Lightning across pricing, benchmarks, and capabilities.

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureInternLM 2.5 20BYi-Lightning
ProviderShanghai AI Lab01.AI
Input Price / 1M tokens$0.180$0.140
Output Price / 1M tokens$0.180$0.140
Context Window
32K
16K
Max Output Tokens
4,096
4,096
Arena ELO
1,155
1,165
Coding ELO
1,150
1,170
TTFT (ms)
150
150
Tokens/sec
100
100
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use InternLM 2.5 20B

InternLM 2.5 20B excels at cost-effective, general-purpose tasks.

Strengths:

  • Very affordable
  • Good instruction following
  • Fast

Best for:

cost-effectivegeneral-purpose
When to Use Yi-Lightning

Yi-Lightning excels at cost-effective, fast-inference tasks.

Strengths:

  • Very cheap
  • Very fast
  • Good quality

Best for:

cost-effectivefast-inference

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