LLMversus
Shanghai AI Lab

InternLM 2.5 20B

Complete specs, pricing, and benchmark data for InternLM 2.5 20B by Shanghai AI Lab. Last verified 2026-04-20.

JSON ModeFunctionsStreaming
Pricing

Input / 1M tokens

$0.180

Output / 1M tokens

$0.180

Context & Output

Context Window

32K

Max Output

4,096

TTFT

150ms

Speed

100 tok/s

Benchmarks

Arena ELO

1155

Coding ELO

1150

Reasoning ELO

1155

HumanEval

77

MMLU

78

MATH

44

GPQA

40

Price History (Input $/M tokens)

Strengths
  • +Very affordable
  • +Good instruction following
  • +Fast
Limitations
  • -Limited reasoning
  • -Small context window

Best For

Cost EffectiveGeneral Purpose

Compare InternLM 2.5 20B with...

vs Claude Opus 4vs Gemini 2.5 Provs o3vs DeepSeek R1vs o1vs Qwen 3 235B MoEvs Gemini Experimental 1206vs GPT-4.5vs DeepSeek R1 (Groq)vs Llama 4 Maverickvs DeepSeek R1 (Together)vs Grok 3
Official Pricing Page →
Your ad here