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Inception Says Mercury 3 Outperforms GPT-6 Luna and Claude Haiku 5.5

Oct 20, 2026
inceptionlabs.ai
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Summary

Inception releases Mercury 3, a diffusion-based language model it says outperforms GPT Better Luna and Claude Haiku 5.5 while generating 1,068 tokens per second on NVIDIA GPUs. The model carries a 1 million token context and costs $0.20 per million input tokens and $0.70 per million output tokens, with launch pricing at half that.

Key Points

  • Inception says Mercury 3 is more than 40x larger than Mercury 1 and triples benchmark intelligence from Mercury 1 mini.
  • Mercury 3 is available on the Inception API Platform and through OpenRouter, Baseten and Vercel, and is OpenAI API compatible.
  • Inception reports Mercury 3 completed 50% of 50 live Mind2Web navigation tasks, more than GPT-6.1-Sol.

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