Gemini 2.5 Pro vs GPT-4.5
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: Gemini 2.5 Pro or GPT-4.5?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | Gemini 2.5 Pro | GPT-4.5 | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $1.25 | $75.00 | Gemini 2.5 Pro is 60.0x cheaper |
| Output Cost / 1M Tokens | $10.00 | $150.00 | Gemini 2.5 Pro (93.3% lower) |
| Prompt Cache Read / 1M | $0.313 | $37.500 | Gemini 2.5 Pro is 120.0x cheaper |
| Prompt Cache Write / 1M | $1.25 | $75.00 | Gemini 2.5 Pro is 60.0x cheaper |
| Avg TTFT Response Latency | 700ms | 850ms | Gemini 2.5 Pro (+150ms faster) |
| SWE-bench Verified (Coding) | 63.8% | 38% | Gemini 2.5 Pro (+25.8% lead) |
| Inference Value Score (IVR) | 56.1 / 100 | 22.1 / 100 | Gemini 2.5 Pro (+34 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
$75.00/1M in · $150.00/1M out
Prompt Cache: $37.500/1M read · $75.00/1M 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 GPT-4.5
Choose GPT-4.5 when you need Deep world-knowledge synthesis, high-EQ conversational nuance, and long-form creative generation requiring massive pretraining breadth. and prioritize OpenAI ecosystem integration at $75.00/1M tokens.
Related Questions & Decision Factors
Which is cheaper: Gemini 2.5 Pro or GPT-4.5?
Gemini 2.5 Pro is cheaper at $1.25/1M input tokens compared to $75.00/1M for GPT-4.5.
Which model has lower latency: Gemini 2.5 Pro or GPT-4.5?
Gemini 2.5 Pro delivers faster response times with an average TTFT of 700ms vs 850ms for GPT-4.5.
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 GPT-4.5?
Choose GPT-4.5 when you need Deep world-knowledge synthesis, high-EQ conversational nuance, and long-form creative generation requiring massive pretraining breadth. and prioritize OpenAI ecosystem integration at $75.00/1M tokens.