Gemini 2.5 Pro vs OpenAI o3-mini
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: Gemini 2.5 Pro or OpenAI o3-mini?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | Gemini 2.5 Pro | OpenAI o3-mini | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $1.25 | $1.10 | OpenAI o3-mini is 1.1x cheaper |
| Output Cost / 1M Tokens | $10.00 | $4.40 | OpenAI o3-mini (56.0% lower) |
| Prompt Cache Read / 1M | $0.313 | $0.550 | Gemini 2.5 Pro is 1.8x cheaper |
| Prompt Cache Write / 1M | $1.25 | $1.10 | OpenAI o3-mini is 1.1x cheaper |
| Avg TTFT Response Latency | 700ms | 1250ms | Gemini 2.5 Pro (+550ms faster) |
| SWE-bench Verified (Coding) | 63.8% | 49.3% | Gemini 2.5 Pro (+14.5% lead) |
| Inference Value Score (IVR) | 56.1 / 100 | 58.2 / 100 | OpenAI o3-mini (+2.1 pts) |
Interactive Monthly Token Economics & ROI Forecaster
Model your expected production workload across prompt (input) and completion (output) tokens with prompt caching economics.
Estimated Monthly Spend
$1.25/1M in · $10.00/1M out
Prompt Cache: $0.313/1M read · $1.25/1M write
$1.10/1M in · $4.40/1M out
Prompt Cache: $0.550/1M read · $1.10/1M write
When to Choose Gemini 2.5 Pro
Choose Gemini 2.5 Pro when you need Million-token multimodal analysis spanning hours of video, audio streams, massive document archives, and complex codebase ingestion. and have an infrastructure budget aligned with $1.25/1M tokens.
When to Choose OpenAI o3-mini
Choose OpenAI o3-mini when you need High-throughput STEM reasoning, competitive coding, and low-latency algorithmic problem solving with configurable thinking effort. and prioritize OpenAI ecosystem integration at $1.10/1M tokens.
Related Questions & Decision Factors
Which is cheaper: Gemini 2.5 Pro or OpenAI o3-mini?
OpenAI o3-mini is cheaper at $1.10/1M input tokens compared to $1.25/1M for Gemini 2.5 Pro.
Which model has lower latency: Gemini 2.5 Pro or OpenAI o3-mini?
Gemini 2.5 Pro delivers faster response times with an average TTFT of 700ms vs 1250ms for OpenAI o3-mini.
When should you choose Gemini 2.5 Pro?
Choose Gemini 2.5 Pro when you need Million-token multimodal analysis spanning hours of video, audio streams, massive document archives, and complex codebase ingestion. and have an infrastructure budget aligned with $1.25/1M tokens.
When should you choose OpenAI o3-mini?
Choose OpenAI o3-mini when you need High-throughput STEM reasoning, competitive coding, and low-latency algorithmic problem solving with configurable thinking effort. and prioritize OpenAI ecosystem integration at $1.10/1M tokens.