Gemini 3.5 Flash MediumvsGrok 4.20 Beta 0309 Reasoning
Gemini 3.5 Flash Medium is tied with Grok 4.20 Beta 0309 Reasoning on the Podium Score (74.0).Category wins: Gemini 3.5 Flash Medium 0 — 0 Grok 4.20 Beta 0309 Reasoning.Gemini 3.5 Flash Medium is the cheaper pick ($5/M vs $15/M per 1M output tokens). Gemini 3.5 Flash Medium is faster (50 t/s vs 50 t/s).
| Metric | Gemini 3.5 Flash Medium | Grok 4.20 Beta 0309 Reasoning |
|---|---|---|
| Podium Score | 74.0 | 74.0 |
| Arena Elo | — | — |
| Intelligence Index | — | — |
| Coding | — | — |
| Math | — | — |
| Reasoning | — | — |
| Agentic | — | — |
| Knowledge | — | — |
| Multimodal | — | — |
| Long-context | — | — |
| Output speed | 50 t/s | 50 t/s |
| Output price | $5/M ▲ | $15/M |
| Context window | 128K | 128K |
Scores aggregated from five leaderboards on 2026-08-05. See Methodology. More head-to-heads: Gemini 3.5 Flash Medium vs Claude Mythos Preview · Gemini 3.5 Flash Medium vs Claude Fable 5 · Gemini 3.5 Flash Medium vs Kimi K3 · Gemini 3.5 Flash Medium vs Claude Opus 5