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OpenCode – Open source AI coding agent

opencode.ai

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Re: OpenCode – Open source AI coding agent

#501

Post by signal_v1 »

embedding-shape wrote: post #397
weird-eye-issue wrote: post #260

Earlier quoted context omitted.

That doesn't sound all that useful to be honest and would likely increase costs overall due to the hit to prompt caching by removing messages

> would likely increase costs overall Assuming you pay per token, which seems like a really strange workflow to lock yourself into at this point. Neither paid monthly plans nor local models suffer from that issue. I tried once to use APIs for agents but seeing a counter of money go up and eventually landing at like $20 for one change, made it really hard to justify. I'd rather pay $200/month before I'd be OK with tha…

The $20-per-change problem is a workflow problem, not a pricing problem. Batching work into larger well-scoped sessions rather than interactive back-and-forth changes the unit economics significantly. Most people use these tools like a terminal — one command at a time — which is the worst possible cost profile.

Re: OpenCode – Open source AI coding agent

#502

Post by plagiarist »

stego-tech wrote: post #488
logicprog wrote: post #107

OpenCode was the first open source agent I used, and my main workhorse after experimenting briefly with Claude Code and realizing the potential of agentic coding. Due to that, and because it's a popular an open source alternative, I want to be able to recommend it and be enthusiastic about it. The problem for me is that the development practices of the people that are working on it are suboptimal at best; they're con…

This is why I'm taking a wait-and-see approach to these tools on HN myself. My month with Claude Code (the TUI, not the GUI) was amazing from an IT POV, just slop-generating niche tools I could quickly implement and audit ( not giant-ass projects), but I ain't outsourcing that to another company when Qwen et al are right there for running on my M1 Pro or RTX 3090. I'm looking forward to more folks building these kind…

Do you have a setup with a local Qwen that can write out niche tools pretty well? I have been curious about how much I could do local.

Re: OpenCode – Open source AI coding agent

#503

Post by sebastianconcpt »

OpenCode is the almost good IDE I need.

What does well: helps context switching by using one window to control many repos with many worktrees each.

What can do better? It's putting AI too much in control? What if I want to edit a function myself in the workspace I'm working on? or select a snippet and refer that in the promp? without that I feel it's missing a non-negotiable feature.

Re: OpenCode – Open source AI coding agent

#504

Post by jeremyjh »

seunosewa wrote: post #403
petcat wrote: post #396

Earlier quoted context omitted.

Anthropic needs to spend some tokens rewriting Claude Code in Rust (yes, really). The difference in feel between Codex and Claude Code is obvious. The whole thing is vibed anyway, I'm sure they could get it done in a week or two for their quality standards.

I'd suggest Go ahead of Rust. It's more accessible to contributors.

I think Go might be a better choice but not for that reason at all.

Go could implement something like this with no dependencies outside the standard library. It would make sense to take on a few, but a comparable Rust project would have at least several dozens.

Also, Go can deliver a single binary that works on every Linux distribution right out of the box. In Rust, its possible but you have to static compile with muslc and that is a far less well-trodden path with some significant differences to the glibc that most Rust libraries have been tested with.

Re: OpenCode – Open source AI coding agent

#505

Post by rurban »

That's my favorite CLI agent, over codex, claude, copilot and qwen-code.

It has beautified markdown output, much more subagents, and access to free models. Unlike claude and codex. Best is opencode with GitHub opus 4.6, but the fun only lasts for a day, then you're out of tokens for a month.

Re: OpenCode – Open source AI coding agent

#506

Post by Implicated »

jazzypants wrote: post #495
doug_durham wrote: post #486

Earlier quoted context omitted.

I run many instances of Claude Code simultaneously and have not experienced what you are seeing. It sounds like you have a bias of Rust over Typescript.

No, they are describing a typical experience with the two apps. Just open both apps, run a few queries, and take a look at the difference in resource management yourself. It sounds like you have a bias of Claude Code over Codex.

Uh, it sounds like you're having trouble understanding that people in this thread are talking about two wildly different "claude code" applications. Those who are claiming the resources issues don't apply to them are referring to the cli application, ie: `claude` and those are saying things like "Just open both apps..." are surely referring to their GUI versions.

Re: OpenCode – Open source AI coding agent

#507

Post by jazzypants »

stego-tech wrote: post #488
logicprog wrote: post #107

OpenCode was the first open source agent I used, and my main workhorse after experimenting briefly with Claude Code and realizing the potential of agentic coding. Due to that, and because it's a popular an open source alternative, I want to be able to recommend it and be enthusiastic about it. The problem for me is that the development practices of the people that are working on it are suboptimal at best; they're con…

This is why I'm taking a wait-and-see approach to these tools on HN myself. My month with Claude Code (the TUI, not the GUI) was amazing from an IT POV, just slop-generating niche tools I could quickly implement and audit ( not giant-ass projects), but I ain't outsourcing that to another company when Qwen et al are right there for running on my M1 Pro or RTX 3090. I'm looking forward to more folks building these kind…

The types of models you can run locally on that hardware are toys in comparison to the foundation models

Re: OpenCode – Open source AI coding agent

#508

Post by heavyset_go »

daliusd wrote: post #487
heavyset_go wrote: post #257

By default OpenCode sends all of your prompts to Grok's free tier to come up with chat summaries for the UI. To change that, you need to set a custom "small model" in the settings.

I had to double check this. Here is summary: The model selection for title generation works as follows (prompt.ts:1956-1960): 1. If the title agent has an explicit model configured — that model is used. 2. Otherwise, it tries Provider.getSmallModel(providerID) — which picks a "small" model from the same provider as the current session, using this priority list (provider.ts:1396-1402): - claude-haiku-4-5 / claude-haik…

When I did this, I used a single local llama.cpp server instance as my main model without setting a small model and it did not use it for chat titles while I used it for prompts.

Chat titles would work even when the local llama.cpp server hadn't started, and it was never in the the llama.cpp logs, it used an external model I hadn't set up and had not intended to use.

It was only when I set `small_model` that I was able to route title generation to my own models.

Re: OpenCode – Open source AI coding agent

#509

Post by trq_ »

jmmv wrote: post #374
logicprog wrote: post #107

OpenCode was the first open source agent I used, and my main workhorse after experimenting briefly with Claude Code and realizing the potential of agentic coding. Due to that, and because it's a popular an open source alternative, I want to be able to recommend it and be enthusiastic about it. The problem for me is that the development practices of the people that are working on it are suboptimal at best; they're con…

> and (partly as a result) it's fairly resource inefficient (often uses 1GB of RAM or more. For a TUI). That's (one of the reasons) why I'm favoring Codex over Claude Code. Claude Code is an... Electron app (for a TUI? WTH?) and Codex is Rust. The difference is tangible: the former feels sluggish and does some odd redrawing when the terminal size changes, while the latter definitely feels more snappy to me (leaving a…

Claude Code is not an electron app.

Re: OpenCode – Open source AI coding agent

#510

Post by zingar »

shaneofalltrad wrote: post #278
zingar wrote: post #134

Earlier quoted context omitted.

Aren’t those in-editor tools? Opencode is a CLI

Ok I get it now, same with the vim comment above, it seems VSCode has the more IDE setup while OpenCode is giving the vim nerdtree vibe? I'll have to take a look, it makes sense to possibly have both for different use cases I guess.

No that’s not it. Opencode is a pure terminal app, your interaction is by typing prompts and slash commands. You can also script prompts to it.

There are probably IDE plugins that feed prompts or context in based on your interaction with the editor.

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