InternLM2-20B
Shanghai AI Lab's 20B flagship with 200K context and strong reasoning.
About
InternLM2-20B is the 20-billion-parameter flagship of Shanghai AI Laboratory's InternLM2 series, released on January 17, 2024 alongside 7B base and chat variants. It supports up to 200K context and posted leading scores among open models of its size on reasoning and knowledge benchmarks.
The code is Apache 2.0 while the model weights use a custom license: fully open for academic research, with free commercial use available through an application form. Check the current license terms before commercial deployment. The InternLM2 line, including math-specialized variants, was a cornerstone of China's open-model ecosystem in 2024.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 127; Trending score 78/100 from researcher assessment.