$ diff gemini-3-8-flash hy4-preview
Gemini 3.8 Flash vs Hy4 preview
Values come from Gemini 3.8 Flash and Hy4 preview, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
Google DeepMindGemini 3.8 Flash
- context
- 1.0M
- weights
- closed
- $/M in
- $0.75
- $/M out
- $3.75
- context
- 1M
- weights
- open
- $/M in
- $0.834
- $/M out
- $2.501
What actually differs
- Context window
- Gemini 3.8 Flash takes 1.0M against 1M — modestly more room in a single request.
- Input price
- Gemini 3.8 Flash at $0.75/M against $0.834/M — 1.1× cheaper to feed.
- Output price
- Hy4 preview at $2.501/M against $3.75/M — 1.5× cheaper to generate. Output dominates the bill on most agentic workloads, where the model writes far more than it reads.
- Weights
- Hy4 preview publishes weights (Apache-2.0); Gemini 3.8 Flash is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- Gemini 3.8 Flash shipped 5 days after Hy4 preview (2026-09-02 vs 2026-08-28).
Full spec
| Attribute | Gemini 3.8 Flash | Hy4 preview |
|---|---|---|
| Developer | Google DeepMind | Tencent |
| Released | 2026-09-02 | 2026-08-28 |
| Context window | 1,048,576 tokens (65,536 max output) | over 1,000,000 |
| Pricing | $0.75/M input · $3.75/M output (introductory, through 2026-12-31) · $1.50/M · $7.50/M from 2027-01-01 | $0.834/M input · $2.501/M output |
| License | proprietary | Apache-2.0 |
| Availability | Gemini API, Google AI Studio, Antigravity, Android Studio, Gemini Enterprise / Gemini Enterprise Agent Platform | Hugging Face (BF16 + FP8), ModelScope, GitCode, CNB, Tencent Cloud TokenHub, OpenRouter, WorkBuddy, CodeBuddy, Yuanbao, ima |