Mercury 3 Launches

Inception's Mercury 3 outperforms GPT-6 Luna and Claude Haiku 5.5 at 1,068 tokens per second.

Oct 19, 2026

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Mercury 3 Launches

Inception's Mercury 3 outperforms GPT-6 Luna and Claude Haiku 5.5 at 1,068 tokens per second.

In brief

Inception's Mercury 3 outperforms GPT-6 Luna and Claude Haiku 5.5 at 1,068 tokens per second. Inception's Mercury 3 is the most capable diffusion-based LLM, outperforming GPT-6 Luna and Claude Haiku 5.5 while running 4-8x faster at 1,000+ tokens per second. Originally reported by Inceptionlabs.

Mercury 3 Launch

Inception introduces Mercury 3, the most capable diffusion-based LLM released to date.

Performance Metrics

Mercury 3 outperforms GPT-6 Luna and Claude Haiku 5.5 while running 4-8x faster at 1,000+ tokens per second.

Scaling Success

Scaling Success

Mercury 3 is more than 40x larger than Mercury 1 and demonstrates text diffusion scales.

Early Access Partners

Early-access partners use Mercury 3 for voice and chat support, real-time tutoring, data engineering, and web navigation.

Mercury 3 at a Glance

Quality: On par or better than frontier speed-optimized models like GPT-6 Luna and Claude Haiku 5.5.

Speed Metrics

Speed Metrics

1,068 tokens per second on NVIDIA GPUs with 1M token context, up from 260K for Mercury 2.5.

Pricing Details

Price: $0.20 per million input and $0.70 per million output tokens at launch 50% off.

Browser Use Agents

Mercury 3 completes 50% of Mind2Web navigation tasks faster than GPT-6.1-Sol with same token volume.

Interactive Education

Intelligence vs. model size

Mercury 3 provides instant feedback to students with quality as good as or better than previous models.

Real-time Search Agents

Mercury 3 delivers median generation time of 0.9 seconds and end-to-end response time of 2.2 seconds.

Here's the gist

Inception's Mercury 3 is the most capable diffusion-based LLM, outperforming GPT-6 Luna and Claude Haiku 5.5 while running 4-8x faster at 1,000+ tokens per second.

Read the original on Inceptionlabs

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