Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Grok 4.6 delivers higher overall intelligence and human-preferred responses (Elo 1,592 vs 1,495), while Gemini 3 Flash leads in SWE-bench software engineering benchmarks (75.8%), while Gemini 3 Flash is more budget-friendly at $3/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 direct benchmark disciplines evaluated across capability, speed, and cost
Fast Google frontier-adjacent model. Near-top official SWE-bench at a fraction of Opus price.
xAI Aug 12 2026 post-training refresh of Grok 4.5. Same $2/$6 API price, 500k context, stronger agentic traces.
Currently comparing Gemini 3 Flash vs Grok 4.6. Alternative family tiers available.
Δ 97 Arena Elo pts
190 tok/s
$3 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Gemini 3 Flash | Grok 4.6 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +97 | ||
| Coding Elo | +58 | ||
| LiveBench | +4.6% | ||
| SWE-bench | +6.7% | ||
| GPQA Diamond | +6.2% | ||
| Time to first token | +100 ms | ||
| Output speed | 190 tok/s | 118 tok/s | +72 tok/s |
| Input price | $0.5/1M | +$1.5/1M | |
| Output price | +$3/1M | ||
| Context window | +549k |
Simulate monthly production API costs in USD (US Dollar).
Gemini 3 Flash is estimated to save $97.50/month ($1,170/year).
Higher SWE-bench (75.8%).
Lower output list price ($3/1M).
Lower TTFT (95 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Grok 4.6).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Gemini 3 Flash | Higher SWE-bench (75.8%). |
| High-volume chat | Gemini 3 Flash | Lower output list price ($3/1M). |
| Voice / low-latency UI | Gemini 3 Flash | Lower TTFT (95 ms). |
| Long-document RAG | Gemini 3 Flash | Larger window (1M). |
| Screenshots / vision | Grok 4.6 | Both accept images. Defaulting to the higher-Elo side (Grok 4.6). |
Brand hub remaps to top xAI vs top OpenAI. After Aug 12 that is Grok 4.6 vs Sol.
xAI’s Aug 12 2026 refresh of Grok 4.5. 500k context. The Grok vs ChatGPT hub remaps here.
March 2026 speed SKU. Still a useful cheap-coding compare even after 3.6/3.7 Flash.
2025-07 row. 4.6 is the buy. We keep 4 so upgrade pairs and old inbound links resolve.
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Verified Head-to-Head Telemetry
compare · Aug 12, 2026
Grok vs ChatGPT: price and Elo, not a personality contest
launch · Aug 12, 2026
Grok 4.6 (Aug 12): post-training refresh, same $2/$6 list
launch · Mar 16, 2026
Gemini 3 Flash: near-top official SWE-bench at a fraction of Opus
launch · Jul 10, 2025
Grok 4 remains the previous xAI flagship on this catalog
