Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, OpenAI o3-mini delivers higher overall intelligence and human-preferred responses (Elo 1,560 vs 1,350), while OpenAI o3-mini leads in SWE-bench software engineering benchmarks (78.5%), while OpenAI o3-mini is more budget-friendly at $4.4/1M per 1M output tokens, while Gemini 2.5 Pro provides faster response streaming (95 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
OpenAI cost-efficient reasoning model with adjustable thinking effort and top coding benchmark scores.
Currently comparing Gemini 2.5 Pro vs OpenAI o3-mini. Alternative family tiers available.
Simulate accuracy gains vs added response time & token cost
Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.
Δ 210 Arena Elo pts
95 tok/s
$4.4 / 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 | OpenAI o3-mini | Advantage Delta |
|---|---|---|---|
| Preference Elo | +210 | ||
| Coding Elo | — | — | |
| LiveBench | +15.3% | ||
| SWE-bench | +14.7% | ||
| GPQA Diamond | +10.8% | ||
| Time to first token | +80 ms | ||
| Output speed | 95 tok/s | 92 tok/s | +3 tok/s |
| Input price | $1.25/1M | $1.1/1M | +$0.15/1M |
| Output price | $4.4/1M | +$0.6/1M | |
| Context window | +1.8M |
Simulate monthly production API costs in USD (US Dollar).
OpenAI o3-mini is estimated to save $14.25/month ($171/year).
Higher SWE-bench (78.5%).
Lower output list price ($4.4/1M).
Lower TTFT (210 ms).
Larger window (2M).
Gemini 2.5 Pro is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | OpenAI o3-mini | Higher SWE-bench (78.5%). |
| High-volume chat | OpenAI o3-mini | Lower output list price ($4.4/1M). |
| Voice / low-latency UI | Gemini 2.5 Pro | Lower TTFT (210 ms). |
| Long-document RAG | Gemini 2.5 Pro | Larger window (2M). |
| Screenshots / vision | Gemini 2.5 Pro | Gemini 2.5 Pro is the side marked multimodal in the catalog. |
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