Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, Grok 4 delivers higher overall intelligence and human-preferred responses (Elo 1,488 vs 1,350), while Gemini 2.5 Pro leads in SWE-bench software engineering benchmarks (63.8%), while Gemini 2.5 Pro is more budget-friendly at $5/1M per 1M output tokens, while Grok 4 provides faster response streaming (98 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
9 direct benchmark disciplines evaluated across capability, speed, and cost
Currently comparing Gemini 2.5 Pro vs Grok 4. Alternative family tiers available.
Δ 138 Arena Elo pts
98 tok/s
$5 / 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 2.5 Pro | Grok 4 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +138 | ||
| LiveBench | +7% | ||
| SWE-bench | +5.2% | ||
| GPQA Diamond | +2.6% | ||
| Time to first token | +20 ms | ||
| Output speed | 95 tok/s | 98 tok/s | +3 tok/s |
| Input price | $1.25/1M | +$1.75/1M | |
| Output price | +$10/1M | ||
| Context window | +1.7M |
Simulate monthly production API costs in USD (US Dollar).
Gemini 2.5 Pro is estimated to save $211.25/month ($2,535/year).
Higher SWE-bench (63.8%).
Lower output list price ($5/1M).
Lower TTFT (210 ms).
Larger window (2M).
Both accept images. Defaulting to the higher-Elo side (Grok 4).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Gemini 2.5 Pro | Higher SWE-bench (63.8%). |
| High-volume chat | Gemini 2.5 Pro | Lower output list price ($5/1M). |
| Voice / low-latency UI | Gemini 2.5 Pro | Lower TTFT (210 ms). |
| Long-document RAG | Gemini 2.5 Pro | Larger window (2M). |
| Screenshots / vision | Grok 4 | Both accept images. Defaulting to the higher-Elo side (Grok 4). |
2025-07 row. 4.6 is the buy. We keep 4 so upgrade pairs and old inbound links resolve.
2025-03 row. 3.x Pro replaced it. Kept for old “2.5 pro vs gpt-4o” inbound.
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