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Comparison · 2 models · Updated Oct 4, 2026

Nemotron 3 Ultra 550B A55B vs Gemini 3.1 Flash Lite

Gemini 3.1 Flash Lite comes out ahead, 73 to 50 on our weighted score, and it is the cheaper option too.

  1. NVIDIA

    Nemotron 3 Ultra 550B A55B

    Released Jun 4, 2026

    50/100
    • ECI146.2
    • Price$0.50 / $2.50
    • Context1M
    Full specs Remove Nemotron 3 Ultra 550B A55B
  2. Our pick

    Google

    Gemini 3.1 Flash Lite

    Released May 7, 2026

    73/100
    • ECI—
    • Price$0.25 / $1.50
    • Context1.05M
    Full specs Remove Gemini 3.1 Flash Lite

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Gemini 3.1 Flash Lite is our pick

Gemini 3.1 Flash Lite is the better all-round choice, scoring 73/100 against Nemotron 3 Ultra 550B A55B (50). It leads on price and inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

  • CapabilityNot enough dataNo independent benchmark covers every model here yet
  • Lowest priceGemini 3.1 Flash LiteGemini 3.1 Flash Lite $0.563 · Nemotron 3 Ultra 550B A55B $1.00 per 1M tokens (3:1 blend)
  • Longest contextGemini 3.1 Flash LiteGemini 3.1 Flash Lite 1,048,576 · Nemotron 3 Ultra 550B A55B 1,000,000 tokens
  • Widest inputsGemini 3.1 Flash LiteNemotron 3 Ultra 550B A55B: Text · Gemini 3.1 Flash Lite: Text, Images, PDFs, Audio, Video
  • Self-hostingNemotron 3 Ultra 550B A55BPublishes downloadable weights
How the score is built
MeasureWeightNemotron 3 Ultra 550B A55BGemini 3.1 Flash Lite
Price50%5062
Inputs & features30%45100
Context window20%6061
Overall100%50/10073/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Nemotron 3 Ultra 550B A55B vs Gemini 3.1 Flash Lite specifications side by side
SpecificationNemotron 3 Ultra 550B A55BNVIDIAGemini 3.1 Flash LiteGoogle
Capability
Capabilities Index (ECI)146.2—
ECI rank#70 of 148—
GPQA DiamondGraduate-level science questions85.4%—
OTIS Mock AIME 2024–2025Competition mathematics86.7%—
Price per million tokens
Input$0.50$0.25 (best)
Output$2.50$1.50 (best)
Cached input$0.15$0.025 (best)
Blended (3:1)$1.00$0.563 (best)
Long-context rateSame rateSame rate
Price sourceOfficial Nvidia APIOfficial Google API
Limits
Context window1,000,000 tokens1,048,576 tokens (best)
Max output128,000 tokens (best)65,536 tokens
Inputs and features
TextYesYes
ImagesNoYes
PDFsNoYes
AudioNoYes
VideoNoYes
ReasoningYesYesminimal · low · medium · high
Tool callingYesYes
Structured outputYesYes
Availability
WeightsOpenProprietary
API model IDnvidia/nemotron-3-ultra-550b-a55bgemini-3.1-flash-lite
API providers2123 (best)
ReleasedJun 4, 2026May 7, 2026
Knowledge cutoff—Jan 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Nemotron 3 Ultra 550B A55B$10.00
  • Gemini 3.1 Flash Lite$5.50
04 — Questions

Which should you choose?

Which is better: Nemotron 3 Ultra 550B A55B or Gemini 3.1 Flash Lite?

Gemini 3.1 Flash Lite is the better all-round choice, scoring 73/100 against Nemotron 3 Ultra 550B A55B (50). It leads on price and inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

Which is cheaper, Nemotron 3 Ultra 550B A55B or Gemini 3.1 Flash Lite?

Gemini 3.1 Flash Lite is cheaper at $0.25 input / $1.50 output per million tokens (official Google API price). Nemotron 3 Ultra 550B A55B costs $0.50 input / $2.50 output per million tokens (official Nvidia API price). At a typical mix of three input tokens to one output token, that is $0.563 per million tokens for Gemini 3.1 Flash Lite versus $1.00 for Nemotron 3 Ultra 550B A55B (1.8× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Nemotron 3 Ultra 550B A55B has an ECI of 146.2 and Gemini 3.1 Flash Lite has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Nemotron 3 Ultra 550B A55B and Gemini 3.1 Flash Lite yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.

Which has the bigger context window?

Gemini 3.1 Flash Lite has the largest context window at 1,048,576 tokens, against 1,000,000 for Nemotron 3 Ultra 550B A55B. Maximum output per response: Nemotron 3 Ultra 550B A55B up to 128,000, Gemini 3.1 Flash Lite up to 65,536 tokens.

Which can read images, PDFs, audio or video?

Nemotron 3 Ultra 550B A55B accepts text; Gemini 3.1 Flash Lite accepts text, images, PDFs, audio and video. Gemini 3.1 Flash Lite handles the widest range of inputs.

Are any of these open source?

Nemotron 3 Ultra 550B A55B publishes its weights and can be self-hosted; Gemini 3.1 Flash Lite is proprietary.

Which is newer?

Nemotron 3 Ultra 550B A55B is the newest, released Jun 4, 2026. Gemini 3.1 Flash Lite came out May 7, 2026. Knowledge cutoff: Gemini 3.1 Flash Lite Jan 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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