GPT-5.4 Mini vs Inception: Mercury

Compare GPT-5.4 Mini by OpenAI against Inception: Mercury by Inception, context windows of 400K vs 32K, tested across 31 shared challenges. Updated March 2026.

Which is better, GPT-5.4 Mini or Inception: Mercury?

GPT-5.4 Mini and Inception: Mercury are both competitive models. GPT-5.4 Mini costs $0.75/M input tokens vs $10/M for Inception: Mercury. Context windows: 400K vs 32K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-5.4 Mini and Inception: Mercury

GPT-5.4 Mini is made by openai while Inception: Mercury is from inception. GPT-5.4 Mini has a 400K token context window compared to Inception: Mercury's 32K. On pricing, GPT-5.4 Mini costs $0.75/M input tokens vs $10/M for Inception: Mercury.

Our Verdict
GPT-5.4 Mini
GPT-5.4 Mini
Inception: Mercury
Inception: MercuryRunner-up

No community votes yet. On paper, GPT-5.4 Mini has the edge — newer, bigger context window, major provider backing.

Too close to call
FAQ

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