$ diff astra hy4-preview
Astra vs Hy4 preview
Values come from Astra 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.
OpenAIAstra
- context
- 1.1M
- weights
- closed
- $/M in
- $10
- $/M out
- $50
- context
- 1M
- weights
- open
- $/M in
- $0.834
- $/M out
- $2.501
What actually differs
- Context window
- Astra takes 1.1M against 1M — modestly more room in a single request.
- Input price
- Hy4 preview at $0.834/M against $10/M — 12.0× cheaper to feed.
- Output price
- Hy4 preview at $2.501/M against $50/M — 20.0× 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); Astra is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- Astra shipped 6 days after Hy4 preview (2026-09-03 vs 2026-08-28).
Full spec
| Attribute | Astra | Hy4 preview |
|---|---|---|
| Developer | OpenAI | Tencent |
| Released | 2026-09-03 | 2026-08-28 |
| Context window | 1,050,000 tokens (128,000 max output) | over 1,000,000 |
| Pricing | $10/M input · $50/M output | $0.834/M input · $2.501/M output |
| License | proprietary | Apache-2.0 |
| Availability | ChatGPT Plus, Pro, Business, Enterprise · OpenAI API · AWS — staged, see below | Hugging Face (BF16 + FP8), ModelScope, GitCode, CNB, Tencent Cloud TokenHub, OpenRouter, WorkBuddy, CodeBuddy, Yuanbao, ima |