o3 Mini vs GPT-2

Compare o3 Mini and GPT-2, both from OpenAI, context windows of 64K vs 1K, tested across 5 shared challenges. Updated March 2026.

Which is better, o3 Mini or GPT-2?

o3 Mini and GPT-2 are both competitive models. Context windows: 64K vs 1K tokens. Compare their real outputs side by side below.

Key Differences Between o3 Mini and GPT-2

o3 Mini is made by openai while GPT-2 is from openai. o3 Mini has a 64K token context window compared to GPT-2's 1K.

Our Verdict
o3 Mini
o3 Mini
GPT-2
GPT-2

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call
vs

Ask them anything yourself

o3 MiniGPT-2
FAQ