# GPT-5.4 Pro vs GPT-5.6 Sol > Side-by-side benchmark comparison for GPT-5.4 Pro and GPT-5.6 Sol across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks. - Canonical page: https://benchlm.ai/compare/gpt-5-4-pro-vs-gpt-5-6-sol - Last updated: September 24, 2026 - Shared sourced benchmarks: 5 - HTML indexing: indexable - Ranking lane: BenchAlign v5.7 ## Quick Verdict Pick GPT-5.6 Sol if you want the stronger benchmark profile. GPT-5.4 Pro only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score. ## Summary - GPT-5.6 Sol leads overall 78.49 to 70.88. - The clearest category separation is in mathematics, where the averages are 68.8 for GPT-5.4 Pro and 96.8 for GPT-5.6 Sol. - The biggest single benchmark swing is FrontierMath v2 (Tier 4) in Mathematics, with scores of 37.500% and 83.000%. - GPT-5.6 Sol is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use. ## Model Snapshot | Property | GPT-5.4 Pro | GPT-5.6 Sol | |----------|----------|----------| | Creator | OpenAI | OpenAI | | Type | Proprietary | Proprietary | | Reasoning | Reasoning | Reasoning | | Context | 1.05M | 1.05M | | Overall Score | 70.88 | 78.49 | | Benchmarks Covered | 10 | 37 | | Pricing (input/output) | $30.00 / $180.00 | $4.00 / $20.00 | ## Category Breakdown ### Agentic - Winner: Not comparable - GPT-5.4 Pro public-lane score: Coming soon - GPT-5.6 Sol public-lane score: 69.6 (Supported · #7/105) | Benchmark | GPT-5.4 Pro | GPT-5.6 Sol | Winner | |-----------|-----------|-----------|--------| | BrowseComp | 89.3% | 92.2% | GPT-5.6 Sol | | Terminal-Bench 3.0 | Coming soon | 34.6% | Coming soon | | Terminal-Bench 2.1 | Coming soon | 91.9% | Coming soon | | OSWorld 2.0 | Coming soon | 62.6% | Coming soon | | CyberGym | Coming soon | 84.5% | Coming soon | | ExploitGym | Coming soon | 33.7% | Coming soon | | Toolathlon | Coming soon | 58% | Coming soon | | Terminal-Bench 2.1 (Vals) | Coming soon | 85.8% | Coming soon | | ApprenticeBench | Coming soon | 26% | Coming soon | ### Coding - Winner: Not comparable - GPT-5.4 Pro public-lane score: Coming soon - GPT-5.6 Sol public-lane score: 71.6 (Supported · #6/135) | Benchmark | GPT-5.4 Pro | GPT-5.6 Sol | Winner | |-----------|-----------|-----------|--------| | Bug Hunt Bench | Coming soon | 42 fixes | Coming soon | | SWE-bench Pro | Coming soon | 64.6% | Coming soon | | Terminal-Bench 2.1 | Coming soon | 91.9% | Coming soon | | DeepSWE | Coming soon | 72.7% | Coming soon | | FrontierCode 1.1 Extended | Coming soon | 60.6% | Coming soon | | FrontierSWE v2 | Coming soon | 32.2% | Coming soon | | cursorBench32 | Coming soon | 67.2% | Coming soon | | VulcanBench v3 | Coming soon | 87.0% | Coming soon | | VulcanBench CII v1 | Coming soon | 86.5% | Coming soon | | LiveCodeBench (Vals) | Coming soon | 82.6% | Coming soon | | SWE-bench (Vals) | Coming soon | 96.2% | Coming soon | | cursorBench40 | Coming soon | 41.7% | Coming soon | ### Reasoning - Winner: Not comparable - GPT-5.4 Pro public-lane score: 74.3 (Unranked · 2 rankable rows) - GPT-5.6 Sol public-lane score: 72.1 (#8/19) | Benchmark | GPT-5.4 Pro | GPT-5.6 Sol | Winner | |-----------|-----------|-----------|--------| | ARC-AGI-2 | 83.3% | 92.5% | GPT-5.6 Sol | | ARC-AGI-3 | Coming soon | 7.8% | Coming soon | | GeneBench-Pro | Coming soon | 28.7% | Coming soon | ### Multimodal & Grounded - Winner: Not comparable - GPT-5.4 Pro public-lane score: Coming soon - GPT-5.6 Sol public-lane score: 87.6 (#5/50) | Benchmark | GPT-5.4 Pro | GPT-5.6 Sol | Winner | |-----------|-----------|-----------|--------| | MMMU-Pro | Coming soon | 83% | Coming soon | | MMMU-Pro w/ Python | Coming soon | 84.6% | Coming soon | ### Knowledge - Winner: Not comparable - GPT-5.4 Pro public-lane score: Coming soon - GPT-5.6 Sol public-lane score: 78.8 (Supported · #7/158) | Benchmark | GPT-5.4 Pro | GPT-5.6 Sol | Winner | |-----------|-----------|-----------|--------| | HLE | 58.7% | Coming soon | Coming soon | | FrontierScience | 36.7% | Coming soon | Coming soon | | FrontierScience Research | 36.7% | Coming soon | Coming soon | | HLE w/o tools | 42.7% | Coming soon | Coming soon | | GPQA | Coming soon | 94.6% | Coming soon | | GPQA-D | Coming soon | 94.6% | Coming soon | | HLE-Verified | Coming soon | 54.5% | Coming soon | | LABBench2 | Coming soon | 82.1% | Coming soon | | HealthBench Professional | Coming soon | 60.5% | Coming soon | | HealthBench Hard | Coming soon | 33.1% | Coming soon | | GPQA Diamond (Vals) | Coming soon | 95.2% | Coming soon | | MMLU-Pro (Vals) | Coming soon | 89.1% | Coming soon | ### Instruction Following - Winner: Not comparable - GPT-5.4 Pro public-lane score: Coming soon - GPT-5.6 Sol public-lane score: 87.7 (#28/124) ### Mathematics - Winner: Not comparable - GPT-5.4 Pro public-lane score: 68.8 (Unranked · 4 rankable rows) - GPT-5.6 Sol public-lane score: 96.8 (Unranked · 3 rankable rows) | Benchmark | GPT-5.4 Pro | GPT-5.6 Sol | Winner | |-----------|-----------|-----------|--------| | IPhO 2025 (Theory) | 93.5% | Coming soon | Coming soon | | FrontierMath (legacy) | 50% | 89% | GPT-5.6 Sol | | FrontierMath v2 (Tiers 1-3) | 50.000% | 89.000% | GPT-5.6 Sol | | FrontierMath v2 (Tier 4) | 37.500% | 83.000% | GPT-5.6 Sol | ## FAQ ### Which is better overall, GPT-5.4 Pro or GPT-5.6 Sol? GPT-5.6 Sol is ahead overall on BenchLM right now. ### Where is the biggest gap between GPT-5.4 Pro and GPT-5.6 Sol? The widest category gap is in mathematics, where the averages are 68.8 for GPT-5.4 Pro and 96.8 for GPT-5.6 Sol. ### How many benchmarks does GPT-5.4 Pro cover on BenchLM? GPT-5.4 Pro currently has 10 sourced benchmark scores on BenchLM. ### How many benchmarks does GPT-5.6 Sol cover on BenchLM? GPT-5.6 Sol currently has 37 sourced benchmark scores on BenchLM. ## Related Comparisons - [GPT-5.4 Pro vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-pro) - [GPT-5.6 Sol vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-6-sol) - [GPT-5.4 Pro vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-gpt-5-4-pro) - [GPT-5.6 Sol vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-gpt-5-6-sol) ## Explore More - [GPT-5.4 Pro profile](/models/gpt-5-4-pro) - [GPT-5.6 Sol profile](/models/gpt-5-6-sol) - [Compare Pricing](/llm-pricing) - [Alternative Finder](/tools/alternative-finder) - [LLM Selector](/tools/llm-selector) - [Overall Rankings](/best/overall)