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Head-to-head comparison

gpt oss safeguard 120b vs o3

gpt oss safeguard 120b (OpenAI) and o3 (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 12 September 2026

As of 12 September 2026, o3 holds the stronger ModelCap Index position (#50 vs #143); and gpt oss safeguard 120b ships open weights.

Which should you choose?

Choose gpt oss safeguard 120b if…

  • you want to self-host: gpt oss safeguard 120b ships open weights while o3 is api only.
  • you want the more recently listed model — gpt oss safeguard 120b was listed 18 September 2025, o3 16 April 2025.

Choose o3 if…

  • you want the stronger overall ModelCap Index position — #50 against #143 (60.7 vs 32.3 points).
  • you want provider choice — 1 listed API providers against 0.

gpt oss safeguard 120b vs o3: specs, pricing and context

Specification comparison of gpt oss safeguard 120b and o3
Fieldgpt oss safeguard 120bOpenAIo3OpenAI
ModelCap Index position#143#50
Index score32.360.7
EvidenceInheritedMeasured
Input price / 1M tokensUnlisted$2.00
Output price / 1M tokensUnlisted$8.00
Context window— tokens200K tokens
Max output tokens—100K
API providers listed01
Weight accessOpen weightsAPI only
Input modalitiesTextImage, Text, File
First listed18 September 202516 April 2025
PublisherOpenAIOpenAI

Evidence: finetune of openai/gpt-oss-120b · fp4 (100%) · 3 public benchmark observations across 3 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: gpt oss safeguard 120b vs o3

Public benchmark boards where gpt oss safeguard 120b or o3 has a published result
Boardgpt oss safeguard 120bo3Leads
Arena codingArena (LMArena)—14601454–1466Only one result
ARC-AGI-2ARC Prize Foundation—6.5%HighOnly one result
SWE-benchSWE-bench (Princeton / SWE-agent team)—58.4%Only one result
BFCL V4UC Berkeley (Gorilla)—63.1PromptOnly one result
AA τ²-Bench TelecomArtificial Analysis—80.7%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="o3":reasoning=trueOnly one result
AA Humanity's Last ExamArtificial Analysis—20.1%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="o3":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.

gpt oss safeguard 120b vs o3: common questions

Is gpt oss safeguard 120b better than o3?

o3 ranks higher on the ModelCap Index as of 12 September 2026: #50 against #143. 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 do not overlap, but the aggregate Index does not predict performance on every task; compare the relevant benchmark configurations before choosing.

Is gpt oss safeguard 120b cheaper than o3?

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, gpt oss safeguard 120b or o3?

Both publish a —-token context window.

Which is better for coding, gpt oss safeguard 120b or o3?

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 gpt oss safeguard 120b and o3 open-weight models?

gpt oss safeguard 120b: Open weights. o3: API only. 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 gpt oss safeguard 120b and o3?

ModelCap currently lists 0 API providers for gpt oss safeguard 120b and 1 for o3, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this gpt oss safeguard 120b vs o3 comparison?

Every figure comes from the sealed ModelCap dataset published 12 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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