Github Copilot
No more fear when facing unfamiliar Github projects. Just click the Copilot icon on the project homepage to start a conversation, and you can even use GPT-4.1 for communication, with up to a 1M context window. From questions like “What can this project be used for?” to “How to deploy and handle bugs?”, it can answer them all well.
Dia Browser
It’s not yet in public beta, but you can submit your email via the link above to join the waitlist.
The Arc browser is already great, offering a stable, mature, and consistent experience—it’s much more than just a sidebar tab innovation.
Dia is the next-generation product from the Arc browser team. Honestly, I don’t quite understand why they need to launch a new product instead of integrating these features directly into Arc. Now, the founder seems to have put Arc on hold.
From a product experience perspective, Dia browser seems to consist of the following parts:
- A built-in AI assistant for daily conversations
- A browser operation assistant similar to nanobrowser or browser-use, helping plan and operate the browser
- An AI writing assistant that can generate text at the cursor
A product with great potential.
Release of GPT o3 / o4-mini / o4-mini-high / 4.1 / 4.1 mini / 4.1 nano
| Model | Context Window | Input Price | Output Price | Image Price | Main Features |
|---|---|---|---|---|---|
| o4-mini-high | 200K tokens | $1.10/M | $4.40/M | $0.842/K image input | High-reasoning version of o4-mini; high throughput, low latency; supports chain calls and structured output |
| o4-mini | 200K tokens | $1.10/M | $4.40/M | $0.842/K image input | Compact reasoning; AIME 99.5%, high SWE-bench score; excellent STEM, vision, and code editing capabilities |
| o3 | 200K tokens | $10/M | $40/M | $7.65/K image input | General strong model; top math, science, coding, and vision reasoning; BYOK required |
| GPT-4.1 | 1.05M tokens | $2/M | $8/M | N/A | Flagship model; million-token context; excellent instruction following, enterprise-grade retrieval, and multimodal understanding |
| GPT-4.1 Mini | 1.05M tokens | $0.40/M | $1.60/M | N/A | Medium version; close to GPT-4o performance; low latency, low cost; strong coding and vision understanding |
| GPT-4.1 Nano | 1.05M tokens | $0.10/M | $0.40/M | N/A | Fastest and cheapest in the series; million-token context; suitable for classification and autocomplete tasks |
GPT-4.1 Nano is naturally suited for translation and is extremely cost-effective. For example, when used for immersive translation with bilingual subtitles enabled, translating an entire season of Black Mirror costs only about $0.005 per episode, and all 7 seasons just $0.25—very low cost.
The context window for GPT-4.1 has finally reached 1M. Previously, GPT was far behind in code writing, but now it has caught up.
o3, o4-mini, and o4-mini-high are all surprisingly impressive, giving a bit of a “mini deep research” feel.
Currently, my daily usage has basically become:
- o4-mini: Simple search and summarization, tolerant of mistakes
- o4-mini-high: Complex search, summarization, multi-step reasoning
- o3: Complex search, summarization, multi-step reasoning where high accuracy is required
- 4o: Intuitive and knowledge-based answers
I’ve also tracked the usage frequency of each model, and I use almost all of them—none are useless, unlike o3-mini, which is almost unusable due to high hallucinations.
Yuanbao Integrates with WeChat Contacts
Yuanbao WeChat can directly add contacts and send messages, supporting both voice and image messages. It’s a competitor to Doubao. The advantage is that no extra app installation is required. I previously recommended Doubao to my parents, and they really liked it. If Yuanbao could also support voice calls or even video chat, it would be even more valuable.
OpenAI Free Token Giveaway
OpenAI is now offering a free token giveaway. You can enable sharing logs in Data controls to claim them. Unfortunately, the duration is too short—just a week or two—so it’s hard to use up all the quota.
Other Github Daily/Weekly Trending Projects
https://github.com/kestra-io/kestra
An automation platform, with competitors including: Airflow (data pipelines), Zapier (low-code marketing automation), Rundeck (ops automation), Camunda (e-commerce business automation)
https://github.com/Zackriya-Solutions/meeting-minutes
A speech-to-text software, a competitor to Apple Voice Memos.
https://github.com/maybe-finance/maybe
Personal financial report management, similar to Youzhi Youxing.
https://github.com/supabase-community/supabase-mcp
A tool for connecting to databases when developing software with AI locally, based on the MCP protocol. If MCP becomes a real future standard, databases may natively support MCP, creating new competition.
https://github.com/langgenius/dify
A low-code LLM platform, a competitor to LangChain, and can partially replace LangChain in current application scenarios.