GPT-4 vs Inception: Mercury

Compare GPT-4 by OpenAI against Inception: Mercury by Inception, context windows of 8K vs 32K, tested across 21 shared challenges. Updated April 2026.

Which is better, GPT-4 or Inception: Mercury?

GPT-4 and Inception: Mercury are both competitive models. GPT-4 costs $30/M input tokens vs $10/M for Inception: Mercury. Context windows: 8K vs 32K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4 and Inception: Mercury

GPT-4 is made by openai while Inception: Mercury is from inception. GPT-4 has a 8K token context window compared to Inception: Mercury's 32K. On pricing, GPT-4 costs $30/M input tokens vs $10/M for Inception: Mercury.

Our Verdict
GPT-4
GPT-4
Inception: Mercury
Inception: Mercury

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

Inception: Mercury is 6.0x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
86%

Inception: Mercury uses 4.3x more emoji

GPT-4
Inception: Mercury
59%Vocabulary55%
18wSentence Length40w
1.10Hedging0.39
0.8Bold4.9
2.5Lists3.8
0.00Emoji0.04
0.00Headings1.04
0.45Transitions0.03
Based on 15 + 17 text responses
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GPT-4Inception: Mercury

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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