Compare · ModelsLive · 2 picked · head to head
GPT-5.6 Terra vs Gemini 3.1 Pro Preview
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.6 Terra wins on 16/29 benchmarks
GPT-5.6 Terra wins 16 of 29 shared benchmarks. Leads in agentic · coding · general.
Category leads
speed·Gemini 3.1 Pro Previewagentic·GPT-5.6 Terrareasoning·Gemini 3.1 Pro Previewknowledge·Gemini 3.1 Pro Previewcoding·GPT-5.6 Terrageneral·GPT-5.6 Terramath·GPT-5.6 Terra
Hype vs Reality
Attention vs performance
GPT-5.6 Terra
#29 by perf·#4 by attention
Gemini 3.1 Pro Preview
#137 by perf·#8 by attention
Best value
GPT-5.6 Terra
1.4x better value than Gemini 3.1 Pro Preview
GPT-5.6 Terra
9.5 pts/$
$7.00/M
Gemini 3.1 Pro Preview
6.9 pts/$
$7.00/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Google DeepMind
$4.20T·Tier 1
Head to head
29 benchmarks · 2 models
GPT-5.6 TerraGemini 3.1 Pro Preview
Artificial Analysis · CritPt
GPT-5.6 Terra leads by +12.3
GPT-5.6 Terra
30.0
Gemini 3.1 Pro Preview
17.7
Artificial Analysis · GDPval
GPT-5.6 Terra leads by +33.9
GPT-5.6 Terra
47.7
Gemini 3.1 Pro Preview
13.8
Artificial Analysis · GPQA Diamond
Gemini 3.1 Pro Preview leads by +1.6
GPT-5.6 Terra
92.5
Gemini 3.1 Pro Preview
94.1
Artificial Analysis · Humanity's Last Exam
Gemini 3.1 Pro Preview leads by +4.1
GPT-5.6 Terra
42.9
Gemini 3.1 Pro Preview
47.0
Artificial Analysis · IFBench
Gemini 3.1 Pro Preview leads by +5.9
GPT-5.6 Terra
71.2
Gemini 3.1 Pro Preview
77.1
Artificial Analysis · Long Context Reasoning
GPT-5.6 Terra leads by +1.0
GPT-5.6 Terra
83.0
Gemini 3.1 Pro Preview
82.0
Artificial Analysis · MMMU Pro
Gemini 3.1 Pro Preview leads by +1.7
GPT-5.6 Terra
80.7
Gemini 3.1 Pro Preview
82.4
Artificial Analysis · Quality Index
GPT-5.6 Terra leads by +12.4
GPT-5.6 Terra
42.1
Gemini 3.1 Pro Preview
29.7
Artificial Analysis · SciCode
Gemini 3.1 Pro Preview leads by +3.7
GPT-5.6 Terra
55.0
Gemini 3.1 Pro Preview
58.7
Artificial Analysis · tau2-Bench Telecom
Gemini 3.1 Pro Preview leads by +9.3
GPT-5.6 Terra
86.3
Gemini 3.1 Pro Preview
95.6
Artificial Analysis · Terminal-Bench Hard
GPT-5.6 Terra leads by +3.8
GPT-5.6 Terra
57.6
Gemini 3.1 Pro Preview
53.8
APEX-Agents
GPT-5.6 Terra leads by +22.9
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
GPT-5.6 Terra
58.2
Gemini 3.1 Pro Preview
35.3
ARC-AGI
Gemini 3.1 Pro Preview leads by +1.5
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
GPT-5.6 Terra
96.5
Gemini 3.1 Pro Preview
98.0
ARC-AGI-2
GPT-5.6 Terra leads by +6.8
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
GPT-5.6 Terra
83.9
Gemini 3.1 Pro Preview
77.1
Balrog
Gemini 3.1 Pro Preview leads by +3.8
Balrog · benchmarks AI agents on text-based adventure games, testing language understanding, strategic planning, and long-horizon reasoning.
GPT-5.6 Terra
53.2
Gemini 3.1 Pro Preview
57.0
Chess Puzzles
Gemini 3.1 Pro Preview leads by +1.0
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
GPT-5.6 Terra
51.6
Gemini 3.1 Pro Preview
52.6
Deepswe
GPT-5.6 Terra leads by +57.9
GPT-5.6 Terra
69.6
Gemini 3.1 Pro Preview
11.7
Dtbench
Gemini 3.1 Pro Preview leads by +6.2
GPT-5.6 Terra
88.9
Gemini 3.1 Pro Preview
95.1
FrontierMath-Tier-4-v2-Private
GPT-5.6 Terra leads by +43.9
GPT-5.6 Terra
70.7
Gemini 3.1 Pro Preview
26.8
FrontierMath-Tiers-1-3-v2-Private
GPT-5.6 Terra leads by +26.3
GPT-5.6 Terra
86.0
Gemini 3.1 Pro Preview
59.6
Furniture Assembly
GPT-5.6 Terra leads by +34.5
GPT-5.6 Terra
34.5
Gemini 3.1 Pro Preview
0.0
GPQA diamond
Gemini 3.1 Pro Preview leads by +1.5
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GPT-5.6 Terra
91.1
Gemini 3.1 Pro Preview
92.6
Lmca
GPT-5.6 Terra leads by +1.3
GPT-5.6 Terra
64.7
Gemini 3.1 Pro Preview
63.3
Mystery Game Puzzles
GPT-5.6 Terra leads by +1.1
GPT-5.6 Terra
28.4
Gemini 3.1 Pro Preview
27.3
OTIS Mock AIME 2024-2025
GPT-5.6 Terra leads by +4.1
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
GPT-5.6 Terra
99.7
Gemini 3.1 Pro Preview
95.6
Proofbench
GPT-5.6 Terra leads by +48.0
GPT-5.6 Terra
74.0
Gemini 3.1 Pro Preview
26.0
SimpleBench
Gemini 3.1 Pro Preview leads by +36.8
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
GPT-5.6 Terra
38.7
Gemini 3.1 Pro Preview
75.5
SimpleQA Verified
Gemini 3.1 Pro Preview leads by +30.3
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
GPT-5.6 Terra
43.2
Gemini 3.1 Pro Preview
73.5
WeirdML
GPT-5.6 Terra leads by +6.2
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
GPT-5.6 Terra
78.3
Gemini 3.1 Pro Preview
72.1
Full benchmark table
| Benchmark | GPT-5.6 Terra | Gemini 3.1 Pro Preview |
|---|---|---|
Artificial Analysis · CritPt | 30.0 | 17.7 |
Artificial Analysis · GDPval | 47.7 | 13.8 |
Artificial Analysis · GPQA Diamond | 92.5 | 94.1 |
Artificial Analysis · Humanity's Last Exam | 42.9 | 47.0 |
Artificial Analysis · IFBench | 71.2 | 77.1 |
Artificial Analysis · Long Context Reasoning | 83.0 | 82.0 |
Artificial Analysis · MMMU Pro | 80.7 | 82.4 |
Artificial Analysis · Quality Index | 42.1 | 29.7 |
Artificial Analysis · SciCode | 55.0 | 58.7 |
Artificial Analysis · tau2-Bench Telecom | 86.3 | 95.6 |
Artificial Analysis · Terminal-Bench Hard | 57.6 | 53.8 |
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 58.2 | 35.3 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 96.5 | 98.0 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 83.9 | 77.1 |
Balrog Balrog · benchmarks AI agents on text-based adventure games, testing language understanding, strategic planning, and long-horizon reasoning. | 53.2 | 57.0 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 51.6 | 52.6 |
Deepswe | 69.6 | 11.7 |
Dtbench | 88.9 | 95.1 |
FrontierMath-Tier-4-v2-Private | 70.7 | 26.8 |
FrontierMath-Tiers-1-3-v2-Private | 86.0 | 59.6 |
Furniture Assembly | 34.5 | 0.0 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 91.1 | 92.6 |
Lmca | 64.7 | 63.3 |
Mystery Game Puzzles | 28.4 | 27.3 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 99.7 | 95.6 |
Proofbench | 74.0 | 26.0 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 38.7 | 75.5 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 43.2 | 73.5 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 78.3 | 72.1 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $2.00 | $12.00 | 1.1M tokens (~525 books) | $45.00 | |
| $2.00 | $12.00 | 1.0M tokens (~524 books) | $45.00 |