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Head-to-head comparison

Llama 3 1 Nemotron Ultra 253B v1 vs gpt-oss-120b

Llama 3 1 Nemotron Ultra 253B v1 (NVIDIA) and gpt-oss-120b (OpenAI) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 15 September 2026

As of 15 September 2026, gpt-oss-120b holds the stronger ModelCap Index position (#125 vs #128); and gpt-oss-120b ships open weights.

Which should you choose?

Choose Llama 3 1 Nemotron Ultra 253B v1 if…

  • ModelCap publishes no field on which Llama 3 1 Nemotron Ultra 253B v1 leads gpt-oss-120b for this pair.

Choose gpt-oss-120b if…

  • you want the stronger overall ModelCap Index position — #125 against #128 (34.8 vs 34.0 points).
  • you want to self-host: gpt-oss-120b ships open weights while Llama 3 1 Nemotron Ultra 253B v1 is restricted license.
  • you want provider choice — 20 listed API providers against 0.
  • you want the more recently listed model — gpt-oss-120b was listed 5 August 2025, Llama 3 1 Nemotron Ultra 253B v1 7 April 2025.

Llama 3 1 Nemotron Ultra 253B v1 vs gpt-oss-120b: specs, pricing and context

Specification comparison of Llama 3 1 Nemotron Ultra 253B v1 and gpt-oss-120b
FieldLlama 3 1 Nemotron Ultra 253B v1NVIDIAgpt-oss-120bOpenAI
ModelCap Index position#128#125
Index score34.034.8
EvidenceMeasuredMeasured
Input price / 1M tokensUnlisted$0.037
Output price / 1M tokensUnlisted$0.17
Context window— tokens131K tokens
Max output tokens—118K
API providers listed020
Weight accessRestricted licenseOpen weights
Input modalitiesTextText
First listed7 April 20255 August 2025
PublisherNVIDIAOpenAI

Evidence: 1 public benchmark observation across 1 board · 2 public benchmark observations across 2 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Llama 3 1 Nemotron Ultra 253B v1 vs gpt-oss-120b

Public benchmark boards where Llama 3 1 Nemotron Ultra 253B v1 or gpt-oss-120b has a published result
BoardLlama 3 1 Nemotron Ultra 253B v1gpt-oss-120bLeads
Arena codingArena (LMArena)—13911383–1398Only one result
SWE-benchSWE-bench (Princeton / SWE-agent team)—26.0%Only one result
BFCL V4UC Berkeley (Gorilla)10.0Function calling—Only one result
AA Intelligence IndexArtificial Analysis—12.3intelligence-index:v4.3:highOnly one result
AA Terminal-Bench 2.1Artificial Analysis—26.2%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="gpt-oss-120b (high)":reasoning=trueOnly one result
AA τ²-Bench TelecomArtificial Analysis—65.8%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="gpt-oss-120b (high)":reasoning=trueOnly one result
AA Humanity's Last ExamArtificial Analysis—19.6%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="gpt-oss-120b (high)":reasoning=trueOnly one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Llama 3 1 Nemotron Ultra 253B v1 vs gpt-oss-120b: common questions

Is Llama 3 1 Nemotron Ultra 253B v1 better than gpt-oss-120b?

gpt-oss-120b ranks higher on the ModelCap Index as of 15 September 2026: #125 against #128. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is Llama 3 1 Nemotron Ultra 253B v1 cheaper than gpt-oss-120b?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, Llama 3 1 Nemotron Ultra 253B v1 or gpt-oss-120b?

Both publish a —-token context window.

Which is better for coding, Llama 3 1 Nemotron Ultra 253B v1 or gpt-oss-120b?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Llama 3 1 Nemotron Ultra 253B v1 and gpt-oss-120b open-weight models?

Llama 3 1 Nemotron Ultra 253B v1: Restricted license. gpt-oss-120b: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Llama 3 1 Nemotron Ultra 253B v1 and gpt-oss-120b?

ModelCap currently lists 0 API providers for Llama 3 1 Nemotron Ultra 253B v1 and 20 for gpt-oss-120b, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Llama 3 1 Nemotron Ultra 253B v1 vs gpt-oss-120b comparison?

Every figure comes from the sealed ModelCap dataset published 15 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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