Video by Furkan (@Furkan_popr) · originally posted on XView original post on X
Google Antigravity (Gemini 3.1 Pro) vs DeepSeek Harness (DeepSeek V4 Pro 0813) vs OpenAI Codex (GPT-6 Sol)
Escape-the-cops game, 3 harnesses
Furkan@Furkan_poprHarness comparison2 likes48 views
A run-from-the-cops game from one-shot prompts in three harness and model pairs: Google Antigravity with Gemini 3.1 Pro, DeepSeek Harness with DeepSeek V4 Pro, and Codex with GPT-6 Sol.
Each side pairs a coding harness with its own model, so harness and model differences are mixed. All harness comparisons.
Harnesses and models
| Harness | Model | Effort | Notes |
|---|---|---|---|
| Google Antigravity | Gemini 3.1 ProGoogle | High | Free, per the author. |
| DeepSeek Harness | DeepSeek V4 Pro 0813medium confidenceDeepSeek | High | About $2, per the author.Written as “V4 Pro (DeepSeek, snapshot unstated)”Written “V4 Pro”; listed as DeepSeek V4 Pro 0813. |
| OpenAI Codex | GPT-6 SolOpenAI | Medium | Codex on a $20 subscription.Written as “GPT-6 Sol” |
Details
| Kind | Side-by-side (same post, same prompt) |
|---|---|
| Task | Escape-the-cops game, 3 harnesses |
| Author’s verdict | Only one of the three is actually playable. — @Furkan_popr’s view (paraphrased) |
| Category | Games |
| Mode | One shot |
| Posted | |
| Video length | 19 s |
| Likes / views | 2 / 48 · as of Oct 18, 2026 |
| Bookmarks | 0 |
| Notes | The author marks the Antigravity and DeepSeek Harness runs with a clown emoji, implying the Codex run is the playable one. |
| Sponsored | No |
| Original post | x.com/Furkan_popr/status/2103138110037020798 |
Related
Compare all 3 modelsDeepSeek V4 Pro 0813 vs Gemini 3.1 ProDeepSeek V4 Pro 0813 vs GPT-6 SolGemini 3.1 Pro vs GPT-6 Sol
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