Model comparison

Gemini 3.1 Pro vs NVIDIA Nemotron 3 Ultra

Google against NVIDIA, compared on context, price, and verified benchmark results.

Catalog record checked September 5, 2026Individual provider fields may changeEvidence confidence: High — see receipts below

Google

Gemini 3.1 Pro

Frontier

NVIDIA

NVIDIA Nemotron 3 Ultra

Frontier · Open weights

AI model capability comparison
Specification	Gemini 3.1 Pro	NVIDIA Nemotron 3 Ultra
Provider	Google	NVIDIA
Tier	Frontier	Frontier
Context window	Winner: 1.05M	1M
Max output	66K	Not verifiedUnverified
Input / 1M tokens	$2	Winner: $0.50
Output / 1M tokens	$12	Winner: $2.20
Weights	Closed	Open
Parameters	Not disclosedUnverified	550B total / 55B active (MoE)
Reasoning levels	low, medium, high	low, high, max
Modalities	text, image, video, audio, pdf	text
API model id	gemini-3.1-pro-preview	nemotron-3-ultra-550b-a55b
Released	February 19, 2026	June 4, 2026
Artificial Analysis Intelligence Index (2026-08-14)	Winner: 60	54
SWE-bench Verified (2026-02)	80.6	Not verifiedUnverified
GPQA Diamond (2026-02)	94.3	Not verifiedUnverified
Humanity's Last Exam (2026-02)	44.4	Not verifiedUnverified
Terminal-Bench 2.1 (2026-07)	73.8	Not verifiedUnverified

Prices are USD per million tokens at standard rates, excluding batch and caching discounts. Bold indicates the better figure where one is objectively better. Values we could not confirm from the provider are shown as “Not verified” rather than estimated.

Benchmark receipts

2026-08-14: Artificial AnalysisComposite index blending reasoning, knowledge, and coding evals into one 0–100 score. Comparability: directly comparable — AA occasionally rebaselines the index scale between snapshots — a score captured on one date is only comparable to same-snapshot scores (check measuredAt).
2026-07: Google DeepMind model evaluation report (vendor, Terminus-2; own Feb report separately reported TB 2.0 = 68.5 — versions preserved)Agentic terminal work: multi-step tasks executed in a sandboxed shell environment. Comparability: comparable with caveat — Scores across Terminal-Bench major versions (v1 vs v2) are NOT comparable; harness configuration (container, time limits) also shifts results.
2026-02: Google DeepMind model evaluation report (vendor, no tools; 51.4 with search+code)Real GitHub issue resolution: does the model's patch pass the hidden tests. Comparability: comparable with caveat — Post-audit vendor claims and pre-audit scores sit on different task trust levels; scaffolding (agent harness, compute budget) also dominates results. Never aggregate across scaffolds.

Pricing tiers: Gemini 3.1 Pro: $2/$12 per MTok (≤200K); $4/$18 (>200K). Still 'Preview' as of 2026-08-29; 3.5 Pro not yet released. · NVIDIA Nemotron 3 Ultra: Open weights (weights + data + recipes); $0.50/$2.20 per MTok is the third-party hosted rate (OpenRouter). 550B/55B MoE.

FrontierRecord checked September 5, 2026

Gemini 3.1 Pro

Gemini 3.1 Pro is Google's current flagship Pro model with record benchmark scores and a 1M-token context.

Best for

Very long documents
Multimodal reasoning
Frontier knowledge work

Watch out

Still in Preview; 3.5 Pro is 'coming soon' but unreleased as of 2026-08-29.

FrontierOpen weightsRecord checked September 2, 2026

NVIDIA Nemotron 3 Ultra

Nemotron 3 Ultra is NVIDIA's open-weight (550B/55B) frontier MoE with a 1M-token context.

Best for

Open-weight frontier
Self-hosting on NVIDIA GPUs
Reasoning

Watch out

Top US open-weight until Thinking Machines Inkling; verify hosted pricing.

When the cheaper one wins

NVIDIA Nemotron 3 Ultra is cheaper on output at $2.20 per million tokens against $12 for Gemini 3.1 Pro — about 5.5×. Use the cheaper tier for classification, extraction, summarisation, and any task where the expensive model’s extra score does not change the accepted output. The expensive one only pays if your hardest task actually fails on the cheap tier. These are standard-tier API rates, excluding batch and cache discounts.

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Evidence confidence: High

How strong and complete the evidence behind this comparison is — not a prediction of which model is better.

Pricing verified on both sides — Input and output rates are verified for both models.
3/5 core specs verified on both sides — Not published for at least one side: max output, parameter count.
1 shared named benchmark with differing scores — Measured on: Artificial Analysis Intelligence Index.
Verified within the last 90 days — Newest catalog check was 6 days ago.
Both models carry source citations — Each side has at least two catalog sources on record.

Source receipts

Each catalog figure was checked against the provider or an independent second source on the date shown.

Gemini 3.1 Pro: Google Cloud — Gemini 3.1 Pro (accessed 2026-08-29)
Gemini 3.1 Pro: TechCrunch — Gemini 3.1 Pro (accessed 2026-08-29)
NVIDIA Nemotron 3 Ultra: NVIDIA — Nemotron (accessed 2026-08-29)
NVIDIA Nemotron 3 Ultra: NVIDIA Nemotron 3 Ultra (accessed 2026-08-29)

Related comparisons

Diving deeper on one model? Gemini 3.1 Pro · NVIDIA Nemotron 3 Ultra

Common questions

Gemini 3.1 Pro vs NVIDIA Nemotron 3 Ultra

Answered from the verified figures on this page rather than general guidance.

Is Gemini 3.1 Pro or NVIDIA Nemotron 3 Ultra cheaper for input?

NVIDIA Nemotron 3 Ultra is cheaper at $0.50 per million input tokens, against $2 for Gemini 3.1 Pro — roughly 4.0× the price. Output tokens usually dominate a real bill, so weigh the output rate more heavily than the input rate. These are base rates; Gemini 3.1 Pro has tiered pricing: $2/$12 per MTok (≤200K); $4/$18 (>200K). Still 'Preview' as of 2026-08-29; 3.5 Pro not yet released. NVIDIA Nemotron 3 Ultra has tiered pricing: Open weights (weights + data + recipes); $0.50/$2.20 per MTok is the third-party hosted rate (OpenRouter). 550B/55B MoE.

Is Gemini 3.1 Pro or NVIDIA Nemotron 3 Ultra cheaper for output?

NVIDIA Nemotron 3 Ultra is cheaper at $2.20 per million output tokens, against $12 for Gemini 3.1 Pro — roughly 5.5× the price. Output tokens usually dominate a real bill, so weigh the output rate more heavily than the input rate. These are base rates; Gemini 3.1 Pro has tiered pricing: $2/$12 per MTok (≤200K); $4/$18 (>200K). Still 'Preview' as of 2026-08-29; 3.5 Pro not yet released. NVIDIA Nemotron 3 Ultra has tiered pricing: Open weights (weights + data + recipes); $0.50/$2.20 per MTok is the third-party hosted rate (OpenRouter). 550B/55B MoE.

Which has the larger context window, Gemini 3.1 Pro or NVIDIA Nemotron 3 Ultra?

Gemini 3.1 Pro accepts 1.05M tokens against 1M for NVIDIA Nemotron 3 Ultra. This only matters if you routinely send very long documents or large codebases.

Do Gemini 3.1 Pro and NVIDIA Nemotron 3 Ultra support the same reasoning levels?

Gemini 3.1 Pro exposes low, medium, high, while NVIDIA Nemotron 3 Ultra exposes low, high, max.

Should I use Gemini 3.1 Pro or NVIDIA Nemotron 3 Ultra?

Both sit in the frontier tier, so the choice usually comes down to price and context rather than capability. Gemini 3.1 Pro suits very long documents; NVIDIA Nemotron 3 Ultra suits open-weight frontier.

Can I self-host Gemini 3.1 Pro or NVIDIA Nemotron 3 Ultra?

NVIDIA Nemotron 3 Ultra publishes open weights, but self-hosting and third-party provider access depend on the licence, hardware, serving support, and availability. Gemini 3.1 Pro is a closed model whose supported access paths are controlled by its provider.

Next step

Choosing between them

The verified figures that separate this pair, computed from the catalog rather than restated boilerplate.

Input price: NVIDIA Nemotron 3 Ultra costs $0.50 per 1M tokens versus $2 for Gemini 3.1 Pro — a 4x difference at the headline tier.
Context: Gemini 3.1 Pro takes 1.05M against 1M for NVIDIA Nemotron 3 Ultra — only decisive if your prompts approach the smaller window.
Measured capability: Gemini 3.1 Pro leads Artificial Analysis Intelligence Index 60 to 54 (measured 2026-08-14).
Deployment: NVIDIA Nemotron 3 Ultra publishes weights you can self-host; the other is API-only.

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