Nox 1.4 Orion (Retired)

Retired flagship model · Page last updated: September 29, 2026

Retired — the flagship of the Nox 1.4 generation

1.4 Orion was the first model of the Nox 1.4 generation: an 824-billion-parameter mixture-of-experts model, 46 billion active per token, with a roughly one-million-token context window. It reasoned through a deliberate internal pass before answering and sized each answer to the question, up to 9,000 characters. It is no longer selectable under this name; Nox Orion 2 is its successor.

Architecture: mixture-of-experts, 824 billion parameters total, 46 billion active per token — the 700-billion-parameter backbone of 1.3 Astra extended with roughly 100 billion parameters of additional trainable components.

Length: earlier Nox models answered under a fixed 4,000-character cap. Lifting that cap alone raised HealthBench Hard by 8.4 ± 2.0 points on a 150-example paired test, almost entirely on completeness. Orion scaled length to the question instead — short for simple questions, up to 9,000 characters for multi-part ones.

HealthBench Hard, Nox self-run, official open protocol, all 1,000 examples: 46.4% (±0.8) at Ultra on September 5, 2026; 53.3% (±1.0) at Hyper Ultra on September 11, 2026. 1.3 Astra on the identical protocol: 34.8%. These remain the most recent published Orion results; they have not been re-measured under the Orion 2 name.

Hyper Ultra was Orion’s sixth and deepest thinking level, in Plan mode on MAX. Same model, several passes over one question — draft, self-written rubric, self-grade, revision — about five to six minutes per answer. On a fixed 150-prompt development subset the lower levels scored Light 36.2%, Balanced 36.8%, Extra 36.9%, Max 38.5%.

Multimodal and tool-using: up to ten photos per message; live web access in Plan mode with up to ten search-and-read rounds per answer, every source cited; inline health and anatomy image generation; thinking time shown on every answer and a live step timeline in Plan mode.

1.4 Orion was succeeded by Nox Orion 2 on September 23, 2026 — the same capabilities with faster overall responses, higher accuracy, and a lower price.

Capabilities

  • 824-billion-parameter mixture-of-experts model, 46 billion active per token
  • ~1,000,000-token context window
  • Deliberate internal reasoning pass before every answer, thinking time shown
  • Six thinking levels, Light to Hyper Ultra
  • Dynamic answer length, up to a 9,000-character cap
  • Photo input — up to ten images per message
  • Live web access in Plan mode — up to ten search-and-read rounds per answer, every source cited

Model details

  • Architecture — Mixture-of-experts — 824 billion parameters total, 46 billion active per token
  • Context window — ~1,000,000 tokens
  • Answer length — Dynamic — sized to the question, up to a 9,000-character hard cap
  • HealthBench Hard — 46.4% (±0.8) at Ultra, September 5, 2026; 53.3% (±1.0) at Hyper Ultra, September 11, 2026 — Nox's own self-runs, official open protocol, all 1,000 examples; not independently verified
  • Raw evidence — Every answer, every grader verdict, aggregate files and SHA-256 checksums are published: Ultra at https://www.getnox.ai/data/healthbench/orion/README.md, Hyper Ultra at https://www.getnox.ai/data/healthbench/orion-hyper-ultra/README.md
  • Status — Retired on September 23, 2026 — succeeded by Nox Orion 2

Availability: Retired — succeeded by Nox Orion 2.

Nox 1.4 Orion was retired on September 23, 2026. Succeeded by Nox Orion 2. Current replacement: Nox Orion 2.

Nox 1.4 Orion — frequently asked questions

What is Nox 1.4 Orion?

Nox 1.4 Orion was Nox's flagship model, retired on September 23, 2026. 1.4 Orion was the first model of the Nox 1.4 generation: an 824-billion-parameter mixture-of-experts model, 46 billion active per token, with a roughly one-million-token context window. It reasoned through a deliberate internal pass before answering and sized each answer to the question, up to 9,000 characters. It is no longer selectable under this name; Nox Orion 2 is its successor.

What could Nox 1.4 Orion do?

Nox 1.4 Orion's capabilities: 824-billion-parameter mixture-of-experts model, 46 billion active per token; ~1,000,000-token context window; Deliberate internal reasoning pass before every answer, thinking time shown; Six thinking levels, Light to Hyper Ultra; Dynamic answer length, up to a 9,000-character cap; Photo input — up to ten images per message; Live web access in Plan mode — up to ten search-and-read rounds per answer, every source cited.

What architecture does Nox 1.4 Orion use?

Architecture: Mixture-of-experts — 824 billion parameters total, 46 billion active per token

How large is Nox 1.4 Orion's context window?

Context window: ~1,000,000 tokens

How long are Nox 1.4 Orion's answers?

Answer length: Dynamic — sized to the question, up to a 9,000-character hard cap

Is Nox 1.4 Orion still available?

No. Nox 1.4 Orion was retired on September 23, 2026 and is no longer part of the Nox lineup. Succeeded by Nox Orion 2.

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