Official updates for developers building with @OpenDesignHQ API & model news, reset notices, offers, technical guides, and updates on OpenDesign Go
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Usage reset complete. 🔄 Keep enjoying your $220 of DeepSeek usage on Go!
We’ve fixed item-limit errors and premature context compaction, and reset weekly Coding Plan allowances for all subscribers: Go, Plus, Pro & Max.
Thanks for your support!
DeepSeek V4.1 Flash vs. Eco?
Same weights. Same capabilities. Full 1M context.
• Eco: more usage for batch processing and non-urgent tasks.
• Standard: for real-time tasks, via DeepSeek’s official API.
Both available on OpenDesign.
Full-weight DeepSeek. More room to build.
Same weights as DeepSeek V4.1 Flash. Same agent, coding, reasoning & multimodal capabilities. Full 1M context.
Up to $220 in monthly usage on OpenDesign Go. $8 for your first month.
Built for non-urgent work.
$220 of usage for DeepSeek is here.
Introducing DeepSeek V4.1 Flash Eco on OpenDesign Go.
• $220 in monthly usage credits
• $8 for your first month, then $10/mo
• 27.5× what you pay in your first month
• For non-urgent work. No quality trade-off.
More gifts to come.
4/ Completion time is the main trade-off.
Average completion time in our real-world design benchmark:
Hy4: 15.2 min
GPT-6.1 Sol: 6.2 min
GPT-6.1 Terra: 2.6 min
For quick iterations, the shorter wait may matter more than a small score difference.
3/ Hy4 has a solid five-dimension profile, with completion speed as its main weakness.
Requirements: 28.1/30
Design quality: 61.9/70
Delivery rate: 84.4%
Avg. completion time: 15.2 min
Estimated cost/design: $0.227
2/ 13 of the 23 models cost more than Hy4 and score lower.
Hy4: 90.0 / $0.227
GPT-6.1 Sol: 90.1 / $0.382
Kimi K3.1 Pro: 91.0 / $1.46
Average score / estimated cost per design in our benchmark.
1/ Hy4 vs Hy4 Preview in our benchmark:
Average score: 90.0 vs 74.6
Delivery rate: 84.4% vs 40.0%
Estimated cost/design: $0.227 vs $0.418
Time: 15.2 vs 29.2 min
Full results:
open-design.ai/llm-arena-for…
Hy4 by @TencentHunyuan scores just 0.1 points behind GPT-6.1 Sol in our design benchmark, at 41% lower estimated cost.
We tested 23 models on real-world design tasks based on user requests. Hy4 ranks #4.
Now on OpenDesign.
Full results ↘️
Tencent Hy4 is now on OpenDesign.
Tencent describes it as “Firmly among the leading open models.” The latest release brings upgrades to frontend development and complex UI interactions.
Available across Go, Plus, Pro & Max.
👋Hy4 is here, new with vision.
Firmly among the leading open models.
More productive everywhere: finance, frontend, game, officework, research…
Built responsibly, with cyber/biosecurity in mind.
Try it out and let us know!
🔗：hy.tencent.ai/research/hy4?l…
