OpenCode vs Sunk Cost (2026): Which Vibe Coding App Is Better?

Both are popular terminal coding agents. Here is how OpenCode and Sunk Cost stack up on price, strengths and weaknesses, and which one we would pick.

OpenCode

Open-source terminal coding agent that works with any model provider

8.4 /10

Pricing: Open source

Pros

Free and open source; any model provider
Claude Code-style extensibility
Fast, well-designed terminal UI

Cons

You pay the model provider directly; costs vary with usage
Smaller community of ready-made extensions

Visit OpenCode ↗

Sunk Cost

How long until a local LLM rig pays for itself?

6.5 /10

Pricing: Free

Pros

Free, no signup, no cookies or IP logging
Grounds the "buy hardware and run locally" debate in real numbers: hardware price, power draw and token throughput
Includes a model capability leaderboard and hardware pricing database for context

Cons

A single-purpose calculator, not an actual coding agent or MCP tool
Estimates depend on self-reported hardware/pricing data and usage assumptions

Visit Sunk Cost ↗

OpenCode vs Sunk Cost at a glance

	OpenCode	Sunk Cost
Editor score	8.4 / 10	6.5 / 10
Pricing model	Open source	Free
Starting price	Free	Free
Reader upvotes	1	0
Best for	terminal, open source, byok	local-llm, cost-calculator, hardware
Agent Skills support	Yes	No
Subagents support	Yes	No
MCP support	Yes	No
AGENTS.md support	Yes	No
Plugins support	Yes	No
Hooks support	No	No
Rules support	No	No
Agent skills in this directory	53	0
Subagents & agents in this directory	26	3
MCP servers in this directory	73	0

Our pick

OpenCode edges it with a score of 8.4 versus 6.5. OpenCode is the better fit if you value: free and open source; any model provider, claude code-style extensibility. Choose Sunk Cost instead if you need: free, no signup, no cookies or ip logging, grounds the "buy hardware and run locally" debate in real numbers: hardware price, power draw and token throughput.