Compare / head-to-head
Gemini 3.8 Flashvs
Hy4 preview
Gemini 3.8 Flash leads 2 of 4 shared benchmarks. Hy4 preview is 1.3x cheaper per token. Gemini 3.8 Flash has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
2 – 1
Gemini 3.8 Flash leads · 1 tied
Cheaper per token
Hy4 preview
1.3x cheaper, input + output
Larger context
Gemini 3.8 Flash
1.0M tokens
Providers
2 providers
Google · Tencent Hunyuan
Gemini 3.8 Flash
Google · released 2026-09-02
textvisionaudio
Hy4 preview
Tencent Hunyuan · released 2026-08-28
text
Quality
Benchmark matrix
4 shared · 33 only Gemini 3.8 Flash · 14 only Hy4 preview| Benchmark | Gemini 3.8 Flash | Hy4 preview | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| GPQA Diamond | 95.3% ↗ | 92.3% ↗ | +3 pt | Gemini 3.8 Flash |
| LMArena Agent (LMArena) | 0.0297 ↗ | 0.0395 ↗ | 0 | Tie |
| LMArena WebDev (LMArena) | 1582.7 ↗ | 1633.2 ↗ | -50.5 | Hy4 preview |
| Terminal-Bench 4.0 (Vals AI) | 19.2% ↗ | 8.1% ↗ | +11.1 pt | Gemini 3.8 Flash |
| Only Gemini 3.8 Flash reports · 33 | ||||
| LMArena Elo | 1494.8 ↗ | not reported | — | — |
| APEX-Agents (Mercor) | 64.3% ↗ | not reported | — | — |
| CharXiv Reasoning (no tools) | 86.2% ↗ | not reported | — | — |
| Chess Puzzles (Epoch AI run) | 61% ↗epoch run | not reported | — | — |
| DeepSWE v1.1 | 73.7% ↗ | not reported | — | — |
| DeepSWE v1.1 (Datacurve) | 73.8% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 22% ↗epoch run | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 68.4% ↗epoch run | not reported | — | — |
| FrontierSWE V2 (Proximal Labs) | 19.6% ↗ | not reported | — | — |
| Furniture Assembly (Epoch AI run) | 31.7% ↗epoch run | not reported | — | — |
| GDPVal-AA v2 | 1545 ↗ | not reported | — | — |
| Harvey's Legal Agent Benchmark | 10% ↗ | not reported | — | — |
| HLE-Verified | 54.9% ↗ | not reported | — | — |
| LABBench2 | 86.2% ↗ | not reported | — | — |
| LiveBench Agentic Coding (LiveBench) | 54.2% ↗ | not reported | — | — |
| LiveBench Coding (LiveBench) | 72.5% ↗ | not reported | — | — |
| LiveBench Data Analysis (LiveBench) | 54% ↗ | not reported | — | — |
| LiveBench Instruction Following (LiveBench) | 81.4% ↗ | not reported | — | — |
| LiveBench Language (LiveBench) | 87.8% ↗ | not reported | — | — |
| LiveBench Mathematics (LiveBench) | 91.6% ↗ | not reported | — | — |
| LiveBench Reasoning (LiveBench) | 89.3% ↗ | not reported | — | — |
| LMArena Vision (LMArena) | 1290.3 ↗ | not reported | — | — |
| Mystery Game Puzzles (Epoch AI run) | 47% ↗epoch run | not reported | — | — |
| OSWorld-2.0 | 59% ↗ | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 98.9% ↗epoch run | not reported | — | — |
| SAGE (Vals AI) | 35.1% ↗ | not reported | — | — |
| SimpleBench (SimpleBench) | 82.4% ↗ | not reported | — | — |
| SimpleQA Verified | 69.7% ↗epoch run | not reported | — | — |
| Terminal-bench 2.1 | 89.4% ↗ | not reported | — | — |
| Terminal-bench 4.0 | 19.1% ↗ | not reported | — | — |
| Vals Finance Agent v2 | 61.4% ↗ | not reported | — | — |
| Vending-Bench 2 (Andon Labs) | 5093.79 ↗ | not reported | — | — |
| WeirdML (Håvard Tveit Ihle) | 84.8% ↗ | not reported | — | — |
| Only Hy4 preview reports · 14 | ||||
| Agents' Last Exam (ALE-CLI) | not reported | 22.8% ↗ | — | — |
| CyberGym | not reported | 78.4% ↗ | — | — |
| DeepSWE | not reported | 64.3% ↗ | — | — |
| HLE (no tools, text-only) | not reported | 43.4% ↗ | — | — |
| HLE (with tools, text-only) | not reported | 55.4% ↗ | — | — |
| MathArena Apex 2025 | not reported | 74.2% ↗ | — | — |
| MCP-Atlas (public) | not reported | 83.7% ↗ | — | — |
| NL2Repo-Bench | not reported | 58.9% ↗ | — | — |
| OfficeQA Pro | not reported | 66.2% ↗ | — | — |
| SWE-bench Multilingual | not reported | 82.9% ↗ | — | — |
| SWE-bench Pro | not reported | 65.7% ↗ | — | — |
| Terminal-Bench 2.1 | not reported | 85.4% ↗ | — | — |
| Toolathlon-Verified | not reported | 74.1% ↗ | — | — |
| WideSearch | not reported | 83.9% ↗ | — | — |
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 Gemini 3.8 Flash minus Hy4 preview 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 | Gemini 3.8 Flash | Hy4 preview | Edge |
|---|---|---|---|
| Context window | 1.0M tokens | 1M tokens | Gemini 3.8 Flash |
| Max output | 66K tokens | 64K tokens | Gemini 3.8 Flash |
| Input price / 1M | $0.75 ↗ | $0.834 ↗ | Gemini 3.8 Flash |
| Output price / 1M | $3.75 ↗ | $2.5 ↗ | Hy4 preview |
| Cached input / 1M | $0.075 ↗ | $0.042 ↗ | Hy4 preview |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $4.5 | $3.34 | Hy4 preview |
| Modalities | text · vision · audio | text | Gemini 3.8 Flash |
| Released | 2026-09-02 | 2026-08-28 | — |
| Cited benchmark scores | 43 | 18 | — |
Reliability
Provider status
Live from /statusMore matchups
Gemini 3.8 Flash vs …
Models sharing the most benchmarksMore matchups
Hy4 preview vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Gemini 3.8 Flash and Hy4 preview on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.