Model comparison
GPT-5.6 Sol vs Hy3 Preview
Head-to-head evidence from 17 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GPT-5.6 Sol #3 (Supported); Hy3 Preview unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-5.6 Sol and Hy3 Preview share 17 comparable benchmark results. 3 of 8 categories are comparable. 29 results are unique to GPT-5.6 Sol; 5 to Hy3 Preview.
Updated July 23, 2026- Shared results
- 17
- GPT-5.6 Sol only
- 29
- Hy3 Preview only
- 5
- Comparable categories
- 3 / 8
Treat this as a split decision. GPT-5.6 Sol makes more sense if knowledge is the priority or you need the larger 1M context window; Hy3 Preview is the better fit if you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 17 shared benchmark results across 4 evidence categories; 3 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
GPT-5.6 Sol and Hy3 Preview finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
GPT-5.6 Sol is also the more expensive model on tokens at $5.00 input / $30.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Hy3 Preview. That is roughly Infinityx on output cost alone. GPT-5.6 Sol gives you the larger context window at 1M, compared with 256K for Hy3 Preview.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | GPT-5.6 Sol | Δ | Hy3 Preview |
|---|---|---|---|
| Knowledge | GPT-5.6 Sol94.6 | Margin← 60.8 | Hy3 Preview33.8 |
| Agentic | GPT-5.6 Sol92.0 | Margin← 37.6 | Hy3 Preview54.4 |
| Coding | GPT-5.6 Sol64.6 | Margin← 6.8 | Hy3 Preview57.8 |
| Math | GPT-5.6 Sol87.5 | MarginNo overlap | Hy3 PreviewNot measured |
| Multimodal | GPT-5.6 Sol83.0 | MarginNo overlap | Hy3 PreviewNot measured |
| Inst. Following | GPT-5.6 SolNot measured | MarginNo overlap | Hy3 Preview63.1 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
Terminal-Bench 2.0
AgenticA 91.9%B 54.4%Winner: GPT-5.6 SolΔ 37.5Terminal-Bench 2.0: GPT-5.6 Sol scored 91.9%; Hy3 Preview scored 54.4%. GPT-5.6 Sol wins this benchmark. - Source ↗
GPQA
KnowledgeA 94.6%B 87.2%Winner: GPT-5.6 SolΔ 7.4GPQA: GPT-5.6 Sol scored 94.6%; Hy3 Preview scored 87.2%. GPT-5.6 Sol wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-5.6 Sol | Hy3 Preview | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-5.6 Sol$5 input / $30 output | Hy3 Preview$0 input / $0 output | Hy3 Preview has the lower combined listed price. |
| Generation speedtokens per second | GPT-5.6 SolNot available | Hy3 PreviewNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GPT-5.6 SolNot available | Hy3 PreviewNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GPT-5.6 Sol1M | Hy3 Preview256K | GPT-5.6 Sol lists the larger context window. |
Benchmark Deep Dive
AgenticGPT-5.6 Sol wins18 benchmarks
| Benchmark | GPT-5.6 Sol | Hy3 Preview | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 91.9% | 54.4% | GPT-5.6 Sol leads |
| BrowseCompSource | 92.2% | — | Not comparable |
| OSWorld 2.0Source | 62.6% | — | Not comparable |
| CyberGymSource | 84.5% | — | Not comparable |
| ExploitGymSource | 33.7% | — | Not comparable |
| ToolathlonSource | 58% | — | Not comparable |
| AA Agentic IndexSource | 54.0% | 30.7% | GPT-5.6 Sol leads |
| τ²-bench resultsSource | 85.1% | — | Not comparable |
| GDPval-AASource | 61.8% | 35.7% | GPT-5.6 Sol leads |
| GDPval-AASource | 1736 | 1214 | GPT-5.6 Sol leads |
| AA BriefcaseSource | 1501 | — | Not comparable |
| AA ITBenchSource | 56.2% | — | Not comparable |
| AA Tau3 BankingSource | 33.0% | — | Not comparable |
| AA AutomationBenchSource | 51.2% | — | Not comparable |
| AA Harvey LABSource | 87.2% | — | Not comparable |
| terminalBenchHardSource | 65.9% | — | Not comparable |
| aaTerminalBench21Source | 88% | — | Not comparable |
| Gert LabsSource | — | 36.91% | Not comparable |
CodingGPT-5.6 Sol wins10 benchmarks
| Benchmark | GPT-5.6 Sol | Hy3 Preview | Result |
|---|---|---|---|
| SWE-bench ProSource | 64.6% | — | Not comparable |
| Terminal-Bench 2.0Source | 91.9% | 54.4% | GPT-5.6 Sol leads |
| deepSweSource | 72.7% | — | Not comparable |
| FrontierCode 1.1 ExtendedSource | 60.6% | — | Not comparable |
| cursorBench32Source | 67.2% | — | Not comparable |
| VulcanBench v3Source | 87.0% | — | Not comparable |
| AA Coding IndexSource | 77.4% | 58.8% | GPT-5.6 Sol leads |
| AA-SciCodeSource | 56.1% | 47.6% | GPT-5.6 Sol leads |
| SWE-bench VerifiedSource | — | 74.4% | Not comparable |
| SciCodeSource | — | 41.2% | Not comparable |
Reasoning4 benchmarks
KnowledgeGPT-5.6 Sol wins11 benchmarks
| Benchmark | GPT-5.6 Sol | Hy3 Preview | Result |
|---|---|---|---|
| GPQASource | 94.6% | 87.2% | GPT-5.6 Sol leads |
| GPQA-DSource | 94.6% | 87.2% | GPT-5.6 Sol leads |
| HealthBench ProfessionalSource | 60.5% | — | Not comparable |
| HealthBench HardSource | 33.1% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 58.9% | 41.2% | GPT-5.6 Sol leads |
| AA-GPQA DiamondSource | 94.1% | 89.7% | GPT-5.6 Sol leads |
| AA-HLESource | 47.2% | 31.6% | GPT-5.6 Sol leads |
| AA-Omniscience IndexSource | 21.7% | -18.5% | GPT-5.6 Sol leads |
| AA-Omniscience AccuracySource | 58.5% | 31.5% | GPT-5.6 Sol leads |
| AA-Omniscience Hallucination RateSource | 88.8% | 73.0% | Hy3 Preview leads |
| HLESource | — | 25.5% | Not comparable |
Math3 benchmarks
Multimodal3 benchmarks
Frequently Asked Questions (4)
Which is better, GPT-5.6 Sol or Hy3 Preview?
GPT-5.6 Sol and Hy3 Preview are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for knowledge tasks, GPT-5.6 Sol or Hy3 Preview?
GPT-5.6 Sol has the edge for knowledge tasks in this comparison, averaging 94.6 versus 33.8. Inside this category, AA-Omniscience Index is the benchmark that creates the most daylight between them.
Which is better for coding, GPT-5.6 Sol or Hy3 Preview?
GPT-5.6 Sol has the edge for coding in this comparison, averaging 64.6 versus 57.8. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, GPT-5.6 Sol or Hy3 Preview?
GPT-5.6 Sol has the edge for agentic tasks in this comparison, averaging 92 versus 54.4. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
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