GPT-5.6 Terra vs gpt-oss-120b: Release Comparison
Comparison of the GPT-5.6 Terra and gpt-oss-120b releases: 6 and 2 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 8 models.
- For intelligence, GPT-5.6 Terra scores highest: GPT-5.6 Terra (max) at 42, against gpt-oss-120b (high) at 12 for gpt-oss-120b.
- For output speed, gpt-oss-120b is fastest: gpt-oss-120b (low) at 220 t/s, against GPT-5.6 Terra (max) at 108 t/s for GPT-5.6 Terra.
- For cost per task, gpt-oss-120b is cheapest: gpt-oss-120b (high) at $0.11, against GPT-5.6 Terra (low) at $0.14 for GPT-5.6 Terra.
Releases compared
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indices
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2, AA-Briefcase, Terminal-Bench v4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-Briefcase, AA-LCR v1.1 · Higher is better
Further details
Weights | Provider Benchmarks | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| GPT-5.6 Terra (max) |  OpenAI | 42 | - | 1M | $1.7 | 108 | Not available |  | |
| GPT-5.6 Terra (xhigh) | OpenAI | 38 | - | 1M | $1.7 | 100 | Not available |  | |
| GPT-5.6 Terra (high) | OpenAI | 34 | - | 1M | $1.7 | 88 | Not available | | |
| GPT-5.6 Terra (medium) | OpenAI | 30 | - | 1M | $1.7 | 90 | Not available | | |
| GPT-5.6 Terra (low) | OpenAI | 28 | - | 1M | $1.7 | 84 | Not available | | |
| GPT-5.6 Terra (Non-reasoning) | OpenAI | 22 | - | 1M | $1.7 | 93 | Not available | | |
| gpt-oss-120b (high) | OpenAI | 12 | 117B 5.1B active at inference time | 131k | $0.2 | 212 |    +14 | ||
| gpt-oss-120b (low) | OpenAI | 10 | 117B 5.1B active at inference time | 131k | $0.2 | 220 |    +14 |