GPT-4.5 vs GPT-4

Compare GPT-4.5 and GPT-4, both from OpenAI, context windows of 128K vs 8K, tested across 10 shared challenges. Updated March 2026.

Which is better, GPT-4.5 or GPT-4?

GPT-4.5 and GPT-4 are both competitive models. GPT-4.5 costs $75/M input tokens vs $30/M for GPT-4. Context windows: 128K vs 8K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.5 and GPT-4

GPT-4.5 is made by openai while GPT-4 is from openai. GPT-4.5 has a 128K token context window compared to GPT-4's 8K. On pricing, GPT-4.5 costs $75/M input tokens vs $30/M for GPT-4.

Our Verdict
GPT-4.5
GPT-4.5
GPT-4
GPT-4Runner-up

No community votes yet. On paper, GPT-4.5 has the edge — newer, bigger context window.

Too close to call
vs

Ask them anything yourself

GPT-4.5GPT-4
FAQ