gpt-oss-120b vs gpt-oss-20b: Release Comparison
Comparison of the gpt-oss-120b and gpt-oss-20b releases: 2 and 2 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 4 models.
- For intelligence, gpt-oss-120b scores highest: gpt-oss-120b (high) at 12, against gpt-oss-20b (low) at 10 for gpt-oss-20b.
- For output speed, gpt-oss-20b is fastest: gpt-oss-20b (low) at 224 t/s, against gpt-oss-120b (high) at 202 t/s for gpt-oss-120b.
- For cost per task, gpt-oss-20b is cheapest: gpt-oss-20b (high) at $0.01, against gpt-oss-120b (high) at $0.11 for gpt-oss-120b.
Releases compared
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost per Task (USD, Log Scale)
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indexes
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2.1, AA-Briefcase v1.1, Terminal-Bench 4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2.1, AA-Briefcase v1.1, AA-LCR v1.1 · Higher is better
Further details
Input modality | Output modality | Weights | Provider Benchmarks | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| gpt-oss-120b (high) |  OpenAI | 12 | 12 | 8 | 11 | 11 | 15 | 18 | $0.11 | $0.2 | $0.15 | $0.595 | $0.125 | $122 | 27k | 15k | 84M | 202 | 0.82s | 10.70s | 13.18s | 131.58s | 117B 5.1B active at inference time | 131k | Aug 2025 | May 2024 | Yes | Supports: text | Supports: text |    +14 | |||
| gpt-oss-120b (low) | OpenAI | 10 | - | - | - | - | - | - | - | $0.2 | $0.15 | $0.545 | $0.15 | - | - | - | - | 199 | 0.80s | 10.85s | 13.36s | - | 117B 5.1B active at inference time | 131k | Aug 2025 | May 2025 | Yes | Supports: text | Supports: text |    +14 | |||
| gpt-oss-20b (low) | OpenAI | 10 | - | - | - | - | - | - | - | $0.1 | $0.07 | $0.215 | - | - | - | - | - | 224 | 0.92s | 9.84s | 12.07s | - | 21B 3.6B active at inference time | 131k | Aug 2025 | May 2025 | Yes | Supports: text | Supports: text |  +4 | |||
| gpt-oss-20b (high) | OpenAI | 9 | 7 | 5 | 7 | 7 | 12 | 11 | $0.01 | $0.1 | $0.07 | $0.18 | - | $31 | 18k | 16k | 70M | 186 | 0.84s | 11.62s | 14.31s | 104.61s | 21B 3.6B active at inference time | 131k | Aug 2025 | May 2024 | Yes | Supports: text | Supports: text |   +5 | |||