# Gemini 3.6 Flash vs GPT-5.6 Terra > Side-by-side benchmark comparison for Gemini 3.6 Flash and GPT-5.6 Terra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks. - Canonical page: https://benchlm.ai/compare/gemini-3-6-flash-vs-gpt-5-6-terra - Last updated: September 4, 2026 - Shared sourced benchmarks: 7 - HTML indexing: indexable - Ranking lane: BenchAlign v5 ## Quick Verdict Pick GPT-5.6 Terra if you want the stronger benchmark profile. Gemini 3.6 Flash only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score. ## Summary - GPT-5.6 Terra leads overall 71.44 to 70.11. - The clearest category separation is in reasoning, where the averages are 77.8 for Gemini 3.6 Flash and 63.4 for GPT-5.6 Terra. - The biggest single benchmark swing is deepSwe in Coding, with scores of 49% and 69.6%. - Gemini 3.6 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use. - GPT-5.6 Terra also has the larger context window at 1.05M. ## Model Snapshot | Property | Gemini 3.6 Flash | GPT-5.6 Terra | |----------|----------|----------| | Creator | Google | OpenAI | | Type | Proprietary | Proprietary | | Reasoning | Reasoning | Reasoning | | Context | 1M | 1.05M | | Overall Score | 70.11 | 71.44 | | Benchmarks Covered | 8 | 31 | | Pricing (input/output) | $1.50 / $7.50 | $2.50 / $15.00 | ## Category Breakdown ### Agentic - Winner: GPT-5.6 Terra - Gemini 3.6 Flash public-lane score: 50.7 (Supported · #60/151) - GPT-5.6 Terra public-lane score: 60.8 (Supported · #22/151) | Benchmark | Gemini 3.6 Flash | GPT-5.6 Terra | Winner | |-----------|-----------|-----------|--------| | OSWorld-Verified | 83% | Coming soon | Coming soon | | Terminal-Bench 2.1 (Vals) | 73.8% | 77.5% | GPT-5.6 Terra | | Terminal-Bench 3.0 | Coming soon | 20.8% | Coming soon | | Terminal-Bench 2.0 | Coming soon | 87.4% | Coming soon | | BrowseComp | Coming soon | 87.5% | Coming soon | | OSWorld 2.0 | Coming soon | 50.2% | Coming soon | | CyberGym | Coming soon | 81.8% | Coming soon | | ExploitGym | Coming soon | 23.2% | Coming soon | | Toolathlon | Coming soon | 53.1% | Coming soon | ### Coding - Winner: GPT-5.6 Terra - Gemini 3.6 Flash public-lane score: 58.9 (Supported · #30/183) - GPT-5.6 Terra public-lane score: 67.2 (Supported · #9/183) | Benchmark | Gemini 3.6 Flash | GPT-5.6 Terra | Winner | |-----------|-----------|-----------|--------| | deepSwe | 49% | 69.6% | GPT-5.6 Terra | | cursorBench32 | 53.5% | 64.9% | GPT-5.6 Terra | | LiveCodeBench (Vals) | 88.1% | 85.9% | Gemini 3.6 Flash | | SWE-bench (Vals) | 79.6% | 95.4% | GPT-5.6 Terra | | SWE-bench Pro | Coming soon | 63.4% | Coming soon | | Terminal-Bench 2.0 | Coming soon | 87.4% | Coming soon | | FrontierCode 1.1 Extended | Coming soon | 55.8% | Coming soon | | VulcanBench v3 | Coming soon | 87.0% | Coming soon | ### Multimodal & Grounded - Winner: Coming soon - Gemini 3.6 Flash public-lane score: 82.3 (Unranked · 1 rankable row) - GPT-5.6 Terra public-lane score: 76.2 (#15/48) | Benchmark | Gemini 3.6 Flash | GPT-5.6 Terra | Winner | |-----------|-----------|-----------|--------| | MMMU-Pro | Coming soon | 80.7% | Coming soon | | MMMU-Pro w/ Python | Coming soon | 82% | Coming soon | ### Reasoning - Winner: Coming soon - Gemini 3.6 Flash public-lane score: 77.8 (Unranked · 2 rankable rows) - GPT-5.6 Terra public-lane score: 63.4 (#16/22) | Benchmark | Gemini 3.6 Flash | GPT-5.6 Terra | Winner | |-----------|-----------|-----------|--------| | ARC-AGI-2 | Coming soon | 83.9% | Coming soon | | ARC-AGI-3 | Coming soon | 0.8% | Coming soon | ### Knowledge - Winner: GPT-5.6 Terra - Gemini 3.6 Flash public-lane score: 68.6 (Supported · #18/181) - GPT-5.6 Terra public-lane score: 69.6 (Supported · #15/181) | Benchmark | Gemini 3.6 Flash | GPT-5.6 Terra | Winner | |-----------|-----------|-----------|--------| | GPQA Diamond (Vals) | 93.4% | 90.9% | Gemini 3.6 Flash | | MMLU-Pro (Vals) | 89.3% | 86.7% | Gemini 3.6 Flash | | GPQA | Coming soon | 92.9% | Coming soon | | GPQA-D | Coming soon | 92.9% | Coming soon | | HLE-Verified | Coming soon | 51.1% | Coming soon | | LABBench2 | Coming soon | 81.2% | Coming soon | | HealthBench Professional | Coming soon | 57.7% | Coming soon | | HealthBench Hard | Coming soon | 32.7% | Coming soon | ### Instruction Following - Winner: Coming soon - Gemini 3.6 Flash public-lane score: Coming soon - GPT-5.6 Terra public-lane score: 86.8 (#35/120) ### Mathematics - Winner: Coming soon - Gemini 3.6 Flash public-lane score: Coming soon - GPT-5.6 Terra public-lane score: 97 (Unranked · 3 rankable rows) | Benchmark | Gemini 3.6 Flash | GPT-5.6 Terra | Winner | |-----------|-----------|-----------|--------| | FrontierMath (legacy) | Coming soon | 84.9% | Coming soon | | FrontierMath v2 (Tiers 1-3) | Coming soon | 84.900% | Coming soon | | FrontierMath v2 (Tier 4) | Coming soon | 68.300% | Coming soon | ## FAQ ### Which is better overall, Gemini 3.6 Flash or GPT-5.6 Terra? GPT-5.6 Terra is ahead overall on BenchLM right now. ### Where is the biggest gap between Gemini 3.6 Flash and GPT-5.6 Terra? The widest category gap is in reasoning, where the averages are 77.8 for Gemini 3.6 Flash and 63.4 for GPT-5.6 Terra. ### How many benchmarks does Gemini 3.6 Flash cover on BenchLM? Gemini 3.6 Flash currently has 8 sourced benchmark scores on BenchLM. ### How many benchmarks does GPT-5.6 Terra cover on BenchLM? GPT-5.6 Terra currently has 31 sourced benchmark scores on BenchLM. ## Related Comparisons - [Gemini 3.6 Flash vs GPT-5.6 Sol](/compare/gemini-3-6-flash-vs-gpt-5-6-sol) - [GPT-5.6 Terra vs GPT-5.6 Sol](/compare/gpt-5-6-sol-vs-gpt-5-6-terra) - [Gemini 3.6 Flash vs GPT-5.6 Luna](/compare/gemini-3-6-flash-vs-gpt-5-6-luna) - [GPT-5.6 Terra vs GPT-5.6 Luna](/compare/gpt-5-6-luna-vs-gpt-5-6-terra) ## Explore More - [Gemini 3.6 Flash profile](/models/gemini-3-6-flash) - [GPT-5.6 Terra profile](/models/gpt-5-6-terra) - [Compare Pricing](/llm-pricing) - [Alternative Finder](/tools/alternative-finder) - [LLM Selector](/tools/llm-selector) - [Overall Rankings](/best/overall)