You can use GPT-5.6 Luna and DeepSeek V4 Pro as full coding agents for $0.
They can literally read your repo, write your code, run commands, and build features for you. Freebuff can: → understand your entire repo → write + edit code → run commands → build features for you
GPT5.6 LUNA vs deepseek_ai Deepseek 4 Flash (0731)
10 Websites - Same prompt
7 hours later (6 hours of autonomous execution) I already have the app working on my phone.
I started with DeepSeek and used it for 90% of the run, then switched to Composer 2.5 to take advantage of the speed. $6 from Opencode Go and 28M tokens in Cursor Grok and Composer. It's worth it?:
Here's DeepSeek V4 Flash solving a public ARC-AGI-1 task, with its raw reasoning trace narrated aloud and subtitled.
I also had Codex try to highlight the relevant cells, rows, and columns as they are referenced. Some observations about its reasoning: - The prompt never
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