Nox 1.3 Nova (Retired)

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

Retired — the balanced model of the 1.3 family

1.3 Nova sat directly below Astra in the Nox 1.3 family. It was a hybrid-reasoning model: it decided per question whether to run a step-by-step reasoning pass or answer directly, which kept replies conversational in speed while staying structured in substance. It is no longer part of the active lineup; Nox Vela 2 and Nox Orion 2 cover its range.

Nova was the middle of the 1.3 generation. Its defining trait was hybrid reasoning — a per-question routing decision between deliberate step-by-step thinking and a direct reply, so no reply carried the latency of an unnecessary reasoning pass.

It read a context window of about 260,000 tokens and saw images natively, so photo input was handled in the model itself rather than through a separate pipeline.

Its headline benchmark figure is public: the foundation engine behind Nova has a reported 90.0% on GPQA-Diamond, the graduate-level science benchmark spanning biology, chemistry, and physics. That figure came from the engine's developer, not from Nox.

Nova carried the family's full toolset: photo input handled automatically, inline chart generation, connected-app actions, and consent-gated live web access with cited sources, all behind Leo, Nox's deterministic safety layer.

1.3 Nova left the active lineup with the Nox 2 generation on September 23, 2026. Everyday conversations run on Nox Vela 2, and Nox Orion 2 covers deeper work.

Capabilities

  • Hybrid reasoning — a per-question decision between step-by-step thinking and a direct answer
  • ~260,000-token context window with native image understanding
  • A developer-reported 90.0% on GPQA-Diamond
  • Inline chart generation and connected-app actions
  • Consent-gated live web access with every source cited

Model details

  • Architecture — Hybrid reasoning — routes each question to a step-by-step pass or a direct answer
  • Context window — ~260,000 tokens
  • Reported benchmarks — 90.0% on GPQA-Diamond (graduate-level science) — as reported by the engine's developer
  • Photo understanding — Native image input
  • Status — Retired on September 23, 2026 — Nox Vela 2 and Nox Orion 2 cover its range

Availability: Retired — no longer part of the active lineup.

Nox 1.3 Nova was retired on September 23, 2026. Nox Vela 2 and Nox Orion 2 cover its range. Current replacement: Nox Vela 2, Nox Orion 2.

Nox 1.3 Nova — frequently asked questions

What is Nox 1.3 Nova?

Nox 1.3 Nova was Nox's advanced model, retired on September 23, 2026. 1.3 Nova sat directly below Astra in the Nox 1.3 family. It was a hybrid-reasoning model: it decided per question whether to run a step-by-step reasoning pass or answer directly, which kept replies conversational in speed while staying structured in substance. It is no longer part of the active lineup; Nox Vela 2 and Nox Orion 2 cover its range.

What could Nox 1.3 Nova do?

Nox 1.3 Nova's capabilities: Hybrid reasoning — a per-question decision between step-by-step thinking and a direct answer; ~260,000-token context window with native image understanding; A developer-reported 90.0% on GPQA-Diamond; Inline chart generation and connected-app actions; Consent-gated live web access with every source cited.

What architecture does Nox 1.3 Nova use?

Architecture: Hybrid reasoning — routes each question to a step-by-step pass or a direct answer

How large is Nox 1.3 Nova's context window?

Context window: ~260,000 tokens

Is Nox 1.3 Nova still available?

No. Nox 1.3 Nova was retired on September 23, 2026 and is no longer part of the Nox lineup. Nox Vela 2 and Nox Orion 2 cover its range.

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