# GPT-5.5 vs MiMo-V2.5-Pro > Side-by-side benchmark comparison for GPT-5.5 and MiMo-V2.5-Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks. - Canonical page: https://benchlm.ai/compare/gpt-5-5-vs-mimo-v2-5-pro - Last updated: September 4, 2026 - Shared sourced benchmarks: 11 - HTML indexing: indexable - Ranking lane: BenchAlign v5 ## Quick Verdict Pick GPT-5.5 if you want the stronger benchmark profile. MiMo-V2.5-Pro only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score. ## Summary - GPT-5.5 leads overall 73.27 to 65.41. - The clearest category separation is in agentic, where the averages are 63.9 for GPT-5.5 and 40.8 for MiMo-V2.5-Pro. - The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 76.4% and 57.3%. - MiMo-V2.5-Pro is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use. ## Model Snapshot | Property | GPT-5.5 | MiMo-V2.5-Pro | |----------|----------|----------| | Creator | OpenAI | Xiaomi | | Type | Proprietary | Proprietary | | Reasoning | Reasoning | Reasoning | | Context | 1M | 1M | | Overall Score | 73.27 | 65.41 | | Benchmarks Covered | 38 | 13 | | Pricing (input/output) | $5.00 / $30.00 | Pricing unavailable / Pricing unavailable | ## Category Breakdown ### Agentic - Winner: GPT-5.5 - GPT-5.5 public-lane score: 63.9 (Supported · #15/151) - MiMo-V2.5-Pro public-lane score: 40.8 (Supported · #118/151) | Benchmark | GPT-5.5 | MiMo-V2.5-Pro | Winner | |-----------|-----------|-----------|--------| | Terminal-Bench 2.0 | 82% | 68.4% | GPT-5.5 | | CyberGym | 81.8% | Coming soon | Coming soon | | BrowseComp | 84.4% | Coming soon | Coming soon | | OSWorld-Verified | 78.7% | Coming soon | Coming soon | | MCP Atlas | 75.3% | Coming soon | Coming soon | | Toolathlon | 55.6% | Coming soon | Coming soon | | τ²-bench results | 98% | Coming soon | Coming soon | | Gert Labs | 72.93% | 62.70% | GPT-5.5 | | ResearchClawBench | 17.0% | Coming soon | Coming soon | | OSWorld 2.0 | 13.0% | Coming soon | Coming soon | | JobBench | 42.7% | Coming soon | Coming soon | | ExploitGym | 13.4% | Coming soon | Coming soon | | Terminal-Bench 2.1 (Vals) | 76.4% | 57.3% | GPT-5.5 | | Claw-Eval | Coming soon | 63.8% | Coming soon | | τ³-bench results | Coming soon | 72.9% | Coming soon | ### Coding - Winner: Coming soon - GPT-5.5 public-lane score: 67.7 (Supported · #8/183) - MiMo-V2.5-Pro public-lane score: 57.1 (Estimated · #36/183) | Benchmark | GPT-5.5 | MiMo-V2.5-Pro | Winner | |-----------|-----------|-----------|--------| | SWE-bench Pro | 58.6% | 57.2% | GPT-5.5 | | Terminal-Bench 2.0 | 82.0% | 68.4% | GPT-5.5 | | Vibe Code Bench | 69.85% | Coming soon | Coming soon | | React Native Evals | 84.7% | Coming soon | Coming soon | | cursorBench31 | 59.2% | Coming soon | Coming soon | | cursorBench32 | 58.4% | Coming soon | Coming soon | | FrontierCode 1.1 Main | 43.0% | Coming soon | Coming soon | | LiveCodeBench (Vals) | 85.3% | 81.4% | GPT-5.5 | | SWE-bench (Vals) | 82.6% | 74.0% | GPT-5.5 | ### Multimodal & Grounded - Winner: Coming soon - GPT-5.5 public-lane score: 71.3 (#19/48) - MiMo-V2.5-Pro public-lane score: Coming soon | Benchmark | GPT-5.5 | MiMo-V2.5-Pro | Winner | |-----------|-----------|-----------|--------| | MMMU-Pro | 81.2% | Coming soon | Coming soon | | MMMU-Pro w/ Python | 83.2% | Coming soon | Coming soon | | OfficeQA Pro | 54.1% | Coming soon | Coming soon | ### Reasoning - Winner: Coming soon - GPT-5.5 public-lane score: 63.5 (#15/22) - MiMo-V2.5-Pro public-lane score: 76.9 (Unranked · 2 rankable rows) | Benchmark | GPT-5.5 | MiMo-V2.5-Pro | Winner | |-----------|-----------|-----------|--------| | MRCR v2 64K-128K | 83.1% | Coming soon | Coming soon | | MRCR v2 128K-256K | 87.5% | Coming soon | Coming soon | | ARC-AGI-2 | 85% | Coming soon | Coming soon | | ARC-AGI-3 | 0.4% | Coming soon | Coming soon | ### Knowledge - Winner: GPT-5.5 - GPT-5.5 public-lane score: 73.3 (Supported · #7/181) - MiMo-V2.5-Pro public-lane score: 55.5 (Supported · #58/181) | Benchmark | GPT-5.5 | MiMo-V2.5-Pro | Winner | |-----------|-----------|-----------|--------| | GPQA | 93.6% | Coming soon | Coming soon | | GPQA-D | 93.6% | Coming soon | Coming soon | | HLE | 52.2% | 48% | GPT-5.5 | | HLE w/o tools | 41.4% | 34% | GPT-5.5 | | GPQA Diamond (Vals) | 93.2% | 82.6% | GPT-5.5 | | MMLU-Pro (Vals) | 88.1% | 84.6% | GPT-5.5 | ### Instruction Following - Winner: Coming soon - GPT-5.5 public-lane score: 92.9 (#7/120) - MiMo-V2.5-Pro public-lane score: 93.5 (#6/120) ### Mathematics - Winner: Coming soon - GPT-5.5 public-lane score: 69.6 (Unranked · 3 rankable rows) - MiMo-V2.5-Pro public-lane score: Coming soon | Benchmark | GPT-5.5 | MiMo-V2.5-Pro | Winner | |-----------|-----------|-----------|--------| | FrontierMath (legacy) | 51.7% | Coming soon | Coming soon | | FrontierMath v2 (Tiers 1-3) | 51.700% | Coming soon | Coming soon | | FrontierMath v2 (Tier 4) | 35.400% | Coming soon | Coming soon | ## FAQ ### Which is better overall, GPT-5.5 or MiMo-V2.5-Pro? GPT-5.5 is ahead overall on BenchLM right now. ### Where is the biggest gap between GPT-5.5 and MiMo-V2.5-Pro? The widest category gap is in agentic, where the averages are 63.9 for GPT-5.5 and 40.8 for MiMo-V2.5-Pro. ### How many benchmarks does GPT-5.5 cover on BenchLM? GPT-5.5 currently has 38 sourced benchmark scores on BenchLM. ### How many benchmarks does MiMo-V2.5-Pro cover on BenchLM? MiMo-V2.5-Pro currently has 13 sourced benchmark scores on BenchLM. ## Related Comparisons - [GPT-5.5 vs GPT-5.5 Pro](/compare/gpt-5-5-vs-gpt-5-5-pro) - [MiMo-V2.5-Pro vs GPT-5.5 Pro](/compare/gpt-5-5-pro-vs-mimo-v2-5-pro) - [GPT-5.5 vs MiMo-V2.5](/compare/gpt-5-5-vs-mimo-v2-5) - [MiMo-V2.5-Pro vs MiMo-V2.5](/compare/mimo-v2-5-vs-mimo-v2-5-pro) ## Explore More - [GPT-5.5 profile](/models/gpt-5-5) - [MiMo-V2.5-Pro profile](/models/mimo-v2-5-pro) - [Compare Pricing](/llm-pricing) - [Alternative Finder](/tools/alternative-finder) - [LLM Selector](/tools/llm-selector) - [Overall Rankings](/best/overall)