Mercury 3

In short: Mercury 3 is a paid ai agents AI tool. Inception's new diffusion LLM, launched Oct 19, 2026, writes many tokens in parallel instead of one at a time: 1,068 tokens/sec on NVIDIA GPUs, a 1M-token context window, tool calling and structured outputs. Inception says it beats GPT-6 Luna and Claude Haiku 5.5 on standard benchmarks (vendor numbers). API pricing is $0.20 / $0.70 per million input / output tokens, half price at launch, and it is also on Vercel AI Gateway. X Buzz Score: 65/100 (312 posts in 7 days).

Verdict: Inception's new diffusion LLM, launched Oct 19, 2026, writes many tokens in parallel instead of one at a time: 1,068 tokens/sec on NVIDIA GPUs, a 1M-token context window, tool calling and structured outputs. Inception says it beats GPT-6 Luna and Claude Haiku 5.5 on standard benchmarks (vendor numbers). API pricing is $0.20 / $0.70 per million input / output tokens, half price at launch, and it is also on Vercel AI Gateway.

Use this if you build voice bots, browser agents or chat support where speed and cost per call matter more than top-end reasoning.

c/agents c/codingpaid

Visit Mercury 3 →

Live X Buzz Score

🔥 65/100 Hype updated 20 Oct, 09:32 HKT

312posts, last 24h

312posts, last 7 days

312×24h vs prior daily avg (0)

772likes in top 25 sampled posts

Daily X posts, last 7 days (oldest → today): 0 · 0 · 0 · 0 · 0 · 0 · 312. Score parts: volume 25/50, spike 25/25, engagement 15.4/25. Method

Why it's buzzing

@_inception_ai · 2026-10-19

Mercury 3 is live: the most capable diffusion LLM released to date. It outperforms GPT-6 Luna and Claude Haiku 5.5 across a range of benchmarks while running at over 1,000 tokens per second. More than 40x the size of Mercury 1, 3x more intelligent across standard benchmarks, an

♥ 637 · ⟲ 49 · 💬 59 · 👁 39k @vercel_dev · 2026-10-19

Mercury 3 from @_inception_ai is live on AI Gateway at a 50% discount. A high-throughput diffusion model with a 1M-token context window and support for tool calling and structured outputs. 𝚒𝚗𝚌𝚎𝚙𝚝𝚒𝚘𝚗/𝚖𝚎𝚛𝚌𝚞𝚛𝚢-𝟹 https://t.co/0FZmayca2J

♥ 80 · ⟲ 4 · 💬 4 · 👁 20k @volokuleshov · 2026-10-19

📢 Mercury 3 is here, the most capable diffusion LLM released to date! 🧠 3x more intelligent than Mercury 1 across standard benchmarks, ahead of GPT-6 Luna and Claude Haiku 5.5 🚀 Over 1,000 tokens/sec, the same speed as Mercury 1 at more than 40x the size 🎯 Early partners are

♥ 111 · ⟲ 13 · 💬 1 · 👁 5,704

Alternatives

Claude Haiku 5.5: Anthropic's fastest small model, pitched for high-volume tasks and coding subagents.
NVIDIA Nemotron 3.5: NVIDIA open model family. The new 3.5 wave adds Nemotron 3.5 Super VL (120B MoE, 12B active, image + video input) and Bolt models built for local agents.

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Headroom: Open-source (Apache 2.0) context compression layer for AI agents: it strips repeated boilerplate from tool outputs, logs, files, JSON and RAG chunks before they reach the model, claiming about 20% fewer tokens for coding agents and 60-95% fewer for JSON. Ships as a library, proxy and MCP server; 76K GitHub stars and on the daily Trending list Oct 19, 2026.

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FAQ

What is Mercury 3?

Inception's new diffusion LLM, launched Oct 19, 2026, writes many tokens in parallel instead of one at a time: 1,068 tokens/sec on NVIDIA GPUs, a 1M-token context window, tool calling and structured outputs. Inception says it beats GPT-6 Luna and Claude Haiku 5.5 on standard benchmarks (vendor numbers). API pricing is $0.20 / $0.70 per million input / output tokens, half price at launch, and it is also on Vercel AI Gateway.

Who should use Mercury 3?

Use Mercury 3 if you build voice bots, browser agents or chat support where speed and cost per call matter more than top-end reasoning.

Is Mercury 3 free?

Mercury 3 is a paid tool.

What are alternatives to Mercury 3?

Alternatives include Claude Haiku 5.5, NVIDIA Nemotron 3.5, Claude Code, Claude.

Discussion

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