LLMversus

Grok 2 vs InternLM 2.5 20B: Pricing, Benchmarks & Verdict (2026)

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

⚡ Quick Answer

Compare Grok 2 and InternLM 2.5 20B across pricing, benchmarks, and capabilities.

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGrok 2InternLM 2.5 20B
ProviderxAIShanghai AI Lab
Input Price / 1M tokens$2.00$0.180
Output Price / 1M tokens$10.00$0.180
Context Window
131.072K
32K
Max Output Tokens
4,096
4,096
Arena ELO
1,240
1,155
Coding ELO
1,225
1,150
TTFT (ms)
150
150
Tokens/sec
100
100
MultimodalNoNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use Grok 2

Grok 2 excels at general-purpose, coding tasks.

Strengths:

  • Large context window
  • Good reasoning
  • Competitive performance

Best for:

general-purposecoding
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

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