Gemini 2.5 Pro vs GPT-5.4
Pricing, benchmarks, and use case comparison
Quick take
- •Gemini 2.5 Pro is 50% cheaper on input tokens, which compounds fast on high-volume or agentic workloads.
Specs comparison
| Gemini 2.5 Pro | GPT-5.4 | |
|---|---|---|
| Provider | Google DeepMind | OpenAI |
| Type | Closed source | Closed source |
| Context window | 1,048,576 tokens (1M) input; up to 65K output | 1,050,000 tokens (128,000 max output) |
| Input / 1M tokens | ✓$1.25 | $2.50 |
| Output / 1M tokens | $10.00 | $15.00 |
| Release date | 2025-06 | 2026-03 |
Benchmarks
| Benchmark | Gemini 2.5 Pro | GPT-5.4 |
|---|---|---|
| Context window | 1M tokens | - |
| Pricing tier break | 200K tokens | - |
Scores sourced from official provider release posts and independent benchmark aggregators.
Which should you choose?
Choose Gemini 2.5 Pro if...
- →Complex reasoning, analysis, or STEM tasks that benefit from a thinking model
- →Processing very long inputs (long documents, large repos)
- →Multimodal tasks needing high quality
Choose GPT-5.4 if...
- →Large-context tasks where GPT-5.5-level frontier reasoning is not required
- →Cost-conscious production workloads that still need strong capability
- →Migrating from GPT-5.4-based systems where behavior is already tuned