GPT-5.6 TerravsGemini 3.5 Flash
Across 6 shared benchmarks, GPT-5.6 Terra leads overall: GPT-5.6 Terra wins 6, Gemini 3.5 Flash wins 0, with 0 ties and an average score difference of +20.53.
GPT-5.6 Terra
OpenAI · 2026-06-26 · Reasoning model
Gemini 3.5 Flash
Google Deep Mind · 2026-06-20 · Multimodal model
GPT-5.6 Terra6 wins(100%)(0%)0 winsGemini 3.5 Flash
Benchmark scores
Grouped by capability, sorted by largest gap within each. 6 shared benchmarks.
Math and Reasoning
GPT-5.6 Terra 2/2| Benchmark | GPT-5.6 Terra | Gemini 3.5 Flash | Diff |
|---|---|---|---|
| FrontierMath Tier 4 v2 | 70.736 / 34最高（无工具） | 26.8318 / 34Thinking High (No Tools) | +43.90 |
| FrontierMath v2 | 85.964 / 34最高（无工具） | 62.8118 / 34Thinking High (No Tools) | +23.16 |
AI Agent - Tool Usage
GPT-5.6 Terra 1/1| Benchmark | GPT-5.6 Terra | Gemini 3.5 Flash | Diff |
|---|---|---|---|
| Terminal-Bench 2.1 | 87.407 / 44最高（无工具） | 76.2023 / 44Thinking High (With Tools) | +11.20 |
Coding and Software Engineer
GPT-5.6 Terra 1/1| Benchmark | GPT-5.6 Terra | Gemini 3.5 Flash | Diff |
|---|---|---|---|
| DeepSWE | 69.603 / 27极高强度思考（工具） | 3723 / 27Thinking Medium (With Tools) | +32.60 |
General Evaluation
GPT-5.6 Terra 1/1| Benchmark | GPT-5.6 Terra | Gemini 3.5 Flash | Diff |
|---|---|---|---|
| GPQA Diamond | 93.3116 / 226最高（无工具） | 92.8019 / 226Thinking High (No Tools) | +0.51 |
General Knowledge
GPT-5.6 Terra 1/1| Benchmark | GPT-5.6 Terra | Gemini 3.5 Flash | Diff |
|---|---|---|---|
| ARC-AGI-2 | 83.907 / 62最高（无工具） | 72.1013 / 62Thinking High (With Tools) | +11.80 |
Specs
| Field | GPT-5.6 Terra | Gemini 3.5 Flash |
|---|---|---|
| Publisher | OpenAI | Google Deep Mind |
| Release date | 2026-06-26 | 2026-06-20 |
| Model type | Reasoning model | Multimodal model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 1.05M | 1M |
| Max output | 128K | 64K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | GPT-5.6 Terra | Gemini 3.5 Flash |
|---|---|---|
| Text input | $2.5 / 1M tokens | $1.5 / 1M tokens |
| Text output | $15 / 1M tokens | $9 / 1M tokens |
| Cache read | $0.25 / 1M tokens | $0.15 / 1M tokens |
| Cache write | $3.125 / 1M tokens | Not public |
Summary
- GPT-5.6 Terraleads in:Math and Reasoning (2/2), AI Agent - Tool Usage (1/1), Coding and Software Engineer (1/1), General Evaluation (1/1), General Knowledge (1/1)
On average across the 6 shared benchmarks, GPT-5.6 Terra scores 20.53 higher.
Largest single-benchmark gap: FrontierMath Tier 4 v2 — GPT-5.6 Terra 70.73 vs Gemini 3.5 Flash 26.83 (+43.90).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.