GPT-4.5 vs o1
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: GPT-4.5 or o1?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | GPT-4.5 | o1 | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $75.00 | $15.00 | o1 is 5.0x cheaper |
| Output Cost / 1M Tokens | $150.00 | $60.00 | o1 (60.0% lower) |
| Prompt Cache Read / 1M | $37.500 | $7.500 | o1 is 5.0x cheaper |
| Prompt Cache Write / 1M | $75.00 | $15.00 | o1 is 5.0x cheaper |
| Avg TTFT Response Latency | 850ms | 2600ms | GPT-4.5 (+1750ms faster) |
| SWE-bench Verified (Coding) | 38% | 48.9% | o1 (+10.9% lead) |
| Inference Value Score (IVR) | 22.1 / 100 | 35.5 / 100 | o1 (+13.4 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
$75.00/1M in · $150.00/1M out
Prompt Cache: $37.500/1M read · $75.00/1M write
$15.00/1M in · $60.00/1M out
Prompt Cache: $7.500/1M read · $15.00/1M write
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 have an infrastructure budget aligned with $75.00/1M tokens.
When to Choose o1
Choose o1 when you need Heavyweight reasoning model engineered for academic research, complex mathematics, and deep multimodal analysis. and prioritize OpenAI ecosystem integration at $15.00/1M tokens.
Related Questions & Decision Factors
Which is cheaper: GPT-4.5 or o1?
o1 is cheaper at $15.00/1M input tokens compared to $75.00/1M for GPT-4.5.
Which model has lower latency: GPT-4.5 or o1?
GPT-4.5 delivers faster response times with an average TTFT of 850ms vs 2600ms for o1.
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 have an infrastructure budget aligned with $75.00/1M tokens.
When should you choose o1?
Choose o1 when you need Heavyweight reasoning model engineered for academic research, complex mathematics, and deep multimodal analysis. and prioritize OpenAI ecosystem integration at $15.00/1M tokens.