Compare / head-to-head
Hy3vs
Seed1.8
Hy3 leads 2 of 2 shared benchmarks. Hy3 is 3.4x cheaper per token. Both offer a 256K-token context window.
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
2 – 0
Hy3 leads
Cheaper per token
Hy3
3.4x cheaper, input + output
Larger context
Tie
both 256K tokens
Providers
2 providers
Tencent Hunyuan · ByteDance Seed
Hy3
Tencent Hunyuan · released 2026-07-06
text
Quality
Benchmark matrix
2 shared · 42 only Hy3 · 14 only Seed1.8| Benchmark | Hy3 | Seed1.8 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| SWE-bench Verified | 78% ↗ | 72.9% ↗ | +5.1 pt | Hy3 |
| WideSearch | 76.4% ↗ | 63.8% ↗ | +12.6 pt | Hy3 |
| Only Hy3 reports · 42 | ||||
| GPQA Diamond | 90.4% ↗ | not reported | — | — |
| Humanity's Last Exam (no tools) | 37% ↗ | not reported | — | — |
| LMArena Elo | 1440.6 ↗ | not reported | — | — |
| AA-LCR | 73.4% ↗ | not reported | — | — |
| Apex-Agent | 25.6% ↗ | not reported | — | — |
| ArxivMath | 52.2% ↗ | not reported | — | — |
| BrowseComp | 84.2% ↗ | not reported | — | — |
| CL-bench | 23.8% ↗ | not reported | — | — |
| CL-bench Life | 17% ↗ | not reported | — | — |
| ClawEval | 68.5% ↗ | not reported | — | — |
| CMT-Benchmark | 37.8% ↗ | not reported | — | — |
| DeepSearchQA | 91% ↗ | not reported | — | — |
| DeepSWE | 28% ↗ | not reported | — | — |
| e-bench | 50.2% ↗ | not reported | — | — |
| FrontierScience-Olympiad | 74.8% ↗ | not reported | — | — |
| FrontierScience-Research | 21.3% ↗ | not reported | — | — |
| HLE (with tools, text-only) | 53.2% ↗ | not reported | — | — |
| HorizonMath | 7.1% ↗ | not reported | — | — |
| Hy-Backend 2.0 | 25% ↗ | not reported | — | — |
| Hy-CompanyBench | 41.7% ↗ | not reported | — | — |
| Hy-Euler Pro | 24.2% ↗ | not reported | — | — |
| Hy-FinModelBench | 69% ↗ | not reported | — | — |
| Hy-Math | 60.9% ↗ | not reported | — | — |
| Hy-SkillsWorld | 45.8% ↗ | not reported | — | — |
| Hy-SWE Max | 49% ↗ | not reported | — | — |
| IMOAnswerBench | 90% ↗ | not reported | — | — |
| LMArena Agent (LMArena) | -0.0538 ↗ | not reported | — | — |
| LMArena WebDev (LMArena) | 1507.4 ↗ | not reported | — | — |
| MathArena Apex | 38.7% ↗ | not reported | — | — |
| MCP Atlas | 79.1% ↗ | not reported | — | — |
| NL2Repo | 45.6% ↗ | not reported | — | — |
| PHYBench | 77.4% ↗ | not reported | — | — |
| ProdBench | 23% ↗ | not reported | — | — |
| SkillsBench | 55.3% ↗ | not reported | — | — |
| SuperChem | 54.9% ↗ | not reported | — | — |
| SWE-bench Multilingual | 75.8% ↗ | not reported | — | — |
| SWE-bench Pro | 57.9% ↗ | not reported | — | — |
| Terminal-Bench 2.1 | 71.7% ↗ | not reported | — | — |
| Toolathlon | 48.5% ↗ | not reported | — | — |
| Toolathlon-Verified (HKUST) | 56.8% ↗ | not reported | — | — |
| USAMO 2026 | 72% ↗ | not reported | — | — |
| WildClawBench | 53.6% ↗ | not reported | — | — |
| Only Seed1.8 reports · 14 | ||||
| MMLU-Pro | not reported | 84.9% ↗ | — | — |
| AIME-25 | not reported | 94.3% ↗ | — | — |
| ARC-AGI-1 | not reported | 67.9% ↗ | — | — |
| BFCL-v4 | not reported | 57.2% ↗ | — | — |
| BrowseComp-en | not reported | 67.6% ↗ | — | — |
| GPQA-Diamond | not reported | 83.8% ↗ | — | — |
| HLE (text-only, agentic search) | not reported | 40.9% ↗ | — | — |
| LiveCodeBench(v6) | not reported | 79.5% ↗ | — | — |
| MM-BrowseComp | not reported | 46.3% ↗ | — | — |
| Multi-SWE-Bench | not reported | 42% ↗ | — | — |
| MultiChallenge | not reported | 66.7% ↗ | — | — |
| OSWorld-Verified (XLANG) | not reported | 61.9% ↗ | — | — |
| Terminal Bench 2.0 | not reported | 45.2% ↗ | — | — |
| τ2-Bench | not reported | 72% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Hy3 minus Seed1.8 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Hy3 | Seed1.8 | Edge |
|---|---|---|---|
| Context window | 256K tokens | 256K tokens | Tie |
| Max output | — | 64K tokens | — |
| Input price / 1M | $0.132 ↗ | $0.25 ↗ | Hy3 |
| Output price / 1M | $0.528 ↗ | $2 ↗ | Hy3 |
| Cached input / 1M | $0.033 ↗ | $0.05 ↗ | Hy3 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $0.66 | $2.25 | Hy3 |
| Modalities | text | text · vision · video | Seed1.8 |
| Released | 2026-07-06 | 2025-12-18 | — |
| Cited benchmark scores | 45 | 16 | — |
Reliability
Provider status
Live from /statusMore matchups
Hy3 vs …
Models sharing the most benchmarksMore matchups
Seed1.8 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Hy3 and Seed1.8 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.