DeepSeek Harness vs Pi — Pi vs DeepSeek Harness: 2 side-by-side tests
2 posts from X ran DeepSeek Harness and Pi on the same task, between Sep 14, 2026 and Oct 21, 2026. Models: DeepSeek V4.1 Flash 1017, DeepSeek V4.1 Flash. All harness comparisons.
- Author picks: 2 posts of 2 name a winner between the two — DeepSeek Harness 2, Pi 0.
- All 2 keep the model fixed, so the difference is the harness.
From 2 posts; costs and times as stated by each author, not a controlled benchmark.
Posts
2
DeepSeek Harness vs Pi, test by test
| Test | DeepSeek Harness: model | Pi: model | Time (DeepSeek Harness / Pi) | Author’s pick |
|---|---|---|---|---|
| Partridge on a bicycle, DeepSeek V4.1 Flash 1017, 3 setups@moskiller666 | DeepSeek V4.1 Flash 1017 (Max) | DeepSeek V4.1 Flash 1017 (Max) | 18.5 min / — | DeepSeek Harness |
| Flappy Bird on a local model@imost | DeepSeek V4.1 Flash | DeepSeek V4.1 Flash | — | DeepSeek Harness |
Numbers are as each post states them; “—” means the post gives none. Tests and models differ from row to row.
API list prices of the models in these tests
| Model | Used with | Input $/1M tokens | Output $/1M tokens |
|---|---|---|---|
| DeepSeek V4.1 Flash 1017 | DeepSeek Harness, Pi | $0.30peak hours; off-peak is half price | $1.20peak hours; off-peak is half price |
| DeepSeek V4.1 Flash | DeepSeek Harness, Pi |
Official API list prices where verified; a blank cell has no verified official price in the archive (older or retired models).
What each test showed
Partridge on a bicycle, DeepSeek V4.1 Flash 1017, 3 setups — DeepSeek V4.1 Flash 1017 (Max) in DeepSeek Harness vs DeepSeek V4.1 Flash 1017 (Max) in Pi
Harness comparison: DeepSeek V4.1 Flash 1017 at Max gets the same prompt, an animation of a partridge riding a bicycle, in DeepSeek Harness, in Pi, and in Pi through a WorkBuddy reverse proxy (Magpie). Both sides ran DeepSeek V4.1 Flash 1017, so this one isolates the harness.
- DeepSeek Harness with DeepSeek V4.1 Flash 1017 at Max effort: time 18.5 min — First GIF; no problems, classical style, 18 min 30 s. Author’s pick.
- Pi with DeepSeek V4.1 Flash 1017 at Max effort — Second GIF; the hands are not on the handlebars.
- Pi with DeepSeek V4.1 Flash 1017 at Max effort — Third GIF; big problems, and slow.
As stated: DeepSeek Harness 18 min 30 s; the other two times are not given.
Verdict from @moskiller666: The author says DeepSeek Harness on the official API was clearly faster and better; Pi left the hands off the handlebars, and Pi through the WorkBuddy proxy had big problems (paraphrased).
Note: Same model in all three, so this compares the setups.
Posted Oct 21, 2026 by Moskiller (@moskiller666). Post on X · Video and details
Flappy Bird on a local model — DeepSeek V4.1 Flash in DeepSeek Harness vs DeepSeek V4.1 Flash in Pi
DeepSeek V4.1 Flash, quantized (EXL3) and run locally on two Sparks, builds Flappy Bird from the same prompt in DeepSeek Harness and in Pi. The author says DeepSeek Harness works much better for this model. Both sides ran DeepSeek V4.1 Flash, so this one isolates the harness.
- DeepSeek Harness with DeepSeek V4.1 Flash — Left in the video. Author’s pick.
- Pi with DeepSeek V4.1 Flash — Right in the video. No audio or particle effects, per the author.
Verdict from @imost: DeepSeek Harness works much better for this model; Pi generated no audio or particle effects (paraphrased).
Posted Sep 14, 2026 by Iman Mostafavi (@imost). Post on X · Video and details
DeepSeek Harness vs Pi (Pi vs DeepSeek Harness): FAQ
Is DeepSeek Harness better than Pi?
Author picks: 2 posts of 2 name a winner between the two — DeepSeek Harness 2, Pi 0. Each post is a different task, so watch the outputs above for the kind of work you do.
Did any test run the same model in DeepSeek Harness and Pi?
Yes, in 2 of the 2: Partridge on a bicycle, DeepSeek V4.1 Flash 1017, 3 setups (@moskiller666) ran DeepSeek V4.1 Flash 1017 on both sides; Flappy Bird on a local model (@imost) ran DeepSeek V4.1 Flash on both sides. The others pair each harness with a different model.
Which models were used with DeepSeek Harness and Pi?
With DeepSeek Harness: DeepSeek V4.1 Flash 1017, DeepSeek V4.1 Flash. With Pi: DeepSeek V4.1 Flash 1017, DeepSeek V4.1 Flash.