Lourd Arun Raj

AI researcher and problem solver. CEO of @KaelorLabs: agents that work in the real world, from drones ( to phone calls (Smitline).

[Lourd Arun Raj @Arun131]

I asked Claude Code to order my dinner. It phoned the restaurant.

It’s insane how this is the number 1 post of the day on the r/ClaudeCode subreddit. I didn’t expect it.

It’s a real call, and it says upfront that it’s an AI and that the call is recorded. I picked up the food after 20 mins as my agent agreed to.

This is Smitline, open source. My friend and I started it at an OpenAI hackathon in Montreal (we won).

[Lourd Arun Raj @Arun131]

@boardyai Yes, would love to

[Lourd Arun Raj @Arun131]

I asked Claude Code to order my dinner. It phoned the restaurant.

It’s insane how this is the number 1 post of the day on the r/ClaudeCode subreddit. I didn’t expect it.

It’s a real call, and it says upfront that it’s an AI and that the call is recorded. I picked up the food after 20 mins as my agent agreed to.

This is Smitline, open source. My friend and I started it at an OpenAI hackathon in Montreal (we won).

[Lourd Arun Raj @Arun131]

It also presses through phone menus. Hold support (lands in the next release) uses a cheap voice activity detection model, so you don't pay for the voice API while you wait on hold.

[Lourd Arun Raj @Arun131]

Best part: Claude Code follows the call live. When Smitline needs something that isn't in its context, it asks Claude mid-call. It can also join your Zoom, Teams and Google Meet calls.

[Lourd Arun Raj @Arun131]

@youssbm Nice! Does it work with Claude Code out of the box or do I need to wire it up?

[Lourd Arun Raj @Arun131]

@morohunkejijohn Pauses are the worst. Hard to tell if they're thinking or done talking. What are you using for turn detection?

[Lourd Arun Raj @Arun131]

@dylan522p Persistent is where it gets hard. With Smitline the agent has to keep calling wait_for_call until the call ends, or it leaves the person hanging on the line.

[Lourd Arun Raj @Arun131]

@emollick Coding moved this fast because you can test it in seconds. With drones a bad test is a crashed drone lol. Hardware will be way slower.

[Lourd Arun Raj @Arun131]

@theo Slow to first token or slow the whole way? For phone calls the first one is what kills you.

[Lourd Arun Raj @Arun131]

@lonniev Love the sofa example lol. Doesn't work on a live phone call though, someone says hello and the agent has to answer right away. So we stay on wait and let the Decisions API decide when to spend.

[Lourd Arun Raj @Arun131]

Used the OpenAI Decisions API in Smitline today. While a call waits for a human to pick up and speak, it decides if the agent should stop API spend and stay on wait.

[Lourd Arun Raj @Arun131]

Google's new Gemini Decisions API only answers from a fixed list. No free text.

That's what I'd want for a go/no-go check before a drone mission. The LLM can plan, execution stays in firmware.

[Lourd Arun Raj @Arun131]

@rokbenko Nice! That's exactly where it should get caught, before it ever reaches the motor.

[Lourd Arun Raj @Arun131]

@angelos_peri That's pretty awesome. Does the threshold change when there's background noise?

[Lourd Arun Raj @Arun131]

@karanwalia_ai @CarnegieMellon @aktoriarobotics @ycombinator Yup, deploying on the real robot is where it always breaks. At MissionSmith the LLM plans and the drone's firmware executes. Do you run the VLA on the robot itself?

[Lourd Arun Raj @Arun131]

@ElevenLabs Switching models mid call sounds great until the big one adds a second of silence and people start saying hello? How do they hide that?

[Lourd Arun Raj @Arun131]

@sundarpichai @GoogleAIStudio Yes/no on audio in one pass. Could this tell voicemail from a real person fast enough on a phone call?

[Lourd Arun Raj @Arun131]

@shawn_pana Ha, we built the other kind of phone. Smitline is an MCP server that places real phone calls, works as a custom connector in Claude and ChatGPT too.