Native
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Gravity Sandbox
Penny winSelf-reported run (local Penny Compare)
This is super fun to play with. Native had a few extra nice controls, but basically identical
Cost−$0.355
−64%
Penny 64% cheaper
Tokens−136.1k
−71%
Penny 71% fewer tokens
Model calls−1
−20%
Penny 20% fewer calls
Session replayProvided with explicit permission of session creator
Claude Code› Build a zero-dependency HTML5 canvas sandbox with an engine loop (requestAnimationFrame). Render a central gravitational body and an interactive spawn tool: clicking and dragging flings satellite bodies into space with an initial velocity vector (draw an aim-line while dragging). Include basic velocity, mass, and gravitational pull equations
NATIVEclaude-opus-5-5
- read
- 145.8k
- write
- 29.6k
- out
- 14.3k
- cost
- $0.552
PENNYclaude-opus-5-5
- read
- 38.1k
- write
- 9.0k
- out
- 7.6k
- cost
- $0.197
Penny
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Session Details
| Native | Penny | |
|---|---|---|
| Model | claude-opus-5-5 | claude-opus-5-5 |
| Model calls | 5 | 4 |
| Cache read | 145.8k | 38.1k |
| Cache write | 29.6k | 9.0k |
| Fresh input | 1.3k | 187 |
| Output | 14.3k | 7.6k |
| Total tokens | 191.0k | 54.8k |
| Background calls | claude-haiku-5-5 ×1 | claude-haiku-5-5 ×1 |
| Cost | $0.552 | $0.197 |
Costs are API-equivalent estimates at Standard prices, including the main conversation, subagents and background calls such as titles and the auto-mode reviewer.