Gemini 4 Argon scores 70.3 on the Respan Index (#3), ahead of Step 5 Preview at 54.9 (#12). Gemini 4 Argon leads on 4 of the 4 benchmarks both report. Step 5 Preview is 2.8x cheaper per token at list price.
| Benchmark | Gemini 4 Argon | Step 5 Preview |
|---|---|---|
| Terminal-Bench 4.0 (Vals AI) | 57.6% | 31.8% |
| LMArena Agent (LMArena) | 0.0757 | 0.0048 |
| LMArena Elo | 1525 | 1454 |
| LMArena WebDev (LMArena) | 1680 | 1570 |
Higher is better. Each score links to where it was published.
* Estimated: no published scores in that category. How the Respan Index works