Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, OpenAI o1-mini delivers higher overall intelligence and human-preferred responses (Elo 1,445 vs 1,350), while Gemini 2.5 Pro leads in SWE-bench software engineering benchmarks (63.8%), while OpenAI o1-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.
OpenAI high-speed, cost-effective reasoning model optimized for STEM, math, and code generation.
Δ 95 Arena Elo pts
95 tok/s
$4.4 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
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 o1-mini | Advantage Delta |
|---|---|---|---|
| Preference Elo | OpenAI o1-mini (+95) | ||
| Coding Elo | — | — | |
| LiveBench | OpenAI o1-mini (+4.9%) | ||
| SWE-bench | Gemini 2.5 Pro (+7.4%) | ||
| GPQA Diamond | OpenAI o1-mini (+0.4%) | ||
| Time to first token | Gemini 2.5 Pro (+70 ms) | ||
| Output speed | 95 tok/s | 85 tok/s | Gemini 2.5 Pro (+10 tok/s) |
| Input price | $1.25/1M | $1.1/1M | OpenAI o1-mini (+$0.15/1M) |
| Output price | $4.4/1M | OpenAI o1-mini (+$5.6/1M) | |
| Context window | Gemini 2.5 Pro (+921k) |
Simulate monthly production API costs in USD (US Dollar).
OpenAI o1-mini is estimated to save $89.25/month ($1,071/year).
Higher SWE-bench (63.8%).
Lower output list price ($4.4/1M).
Lower TTFT (210 ms).
Larger window (1M).
Gemini 2.5 Pro is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Gemini 2.5 Pro | Higher SWE-bench (63.8%). |
| High-volume chat | OpenAI o1-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 (1M). |
| Screenshots / vision | Gemini 2.5 Pro | Gemini 2.5 Pro is the side marked multimodal in the catalog. |
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Verified head-to-head card
