LV
LLMversus

InternLM 2.5 20B vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare InternLM 2.5 20B and o3-mini across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureInternLM 2.5 20Bo3-mini
ProviderShanghai AI LabOpenAI
Input Price / 1M tokens$0.180$1.10
Output Price / 1M tokens$0.180$4.40
Context Window
32K
128K
Max Output Tokens
4,096
65,536
Arena ELO
1,155
1,280
Coding ELO
1,150
1,285
TTFT (ms)
150
350
Tokens/sec
100
25
MultimodalNoNo
JSON ModeYesYes
Function CallingYesNo
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 o3-mini

o3-mini excels at reasoning, math, general-purpose tasks.

Strengths:

  • Strong reasoning
  • Good math skills
  • Affordable reasoning

Best for:

reasoningmathgeneral-purpose

Related Comparisons

Claude Opus 4 vs o3-miniClaude Opus 4 vs InternLM 2.5 20BGemini 2 5 Pro vs o3-miniGemini 2 5 Pro vs InternLM 2.5 20BO3 vs o3-miniInternLM 2.5 20B vs O3Deepseek R1 vs o3-miniDeepseek R1 vs InternLM 2.5 20BO1 vs o3-miniInternLM 2.5 20B vs O1o3-mini vs Qwen 3 235bInternLM 2.5 20B vs Qwen 3 235bGemini Exp 1206 vs o3-miniGemini Exp 1206 vs InternLM 2.5 20BGpt 4 5 vs o3-miniGpt 4 5 vs InternLM 2.5 20BGroq Deepseek R1 vs o3-miniGroq Deepseek R1 vs InternLM 2.5 20BLlama 4 Maverick vs o3-miniInternLM 2.5 20B vs Llama 4 Maverick