Gemini 1.5 Pro vs Gemini 2.5 Pro
Different efforts: default · thinking
Humanity's Last Exam Humanity's Last Exam: Very hard expert questions across many fields, written to stump today’s models
Gemini 1.5 Pro—
Gemini 2.5 Pro22.5
Terminal-Bench 4.0 Terminal-Bench 4.0 · source setting 2: Agents use a terminal to complete executable coding, system administration and research tasks in the 4.0 suite
Gemini 1.5 Pro—
Gemini 2.5 Pro0
AutomationBench-AA AutomationBench-AA: Agents orchestrate SaaS workflows through APIs; objectives receive credit only when the task has no guardrail violation
Gemini 1.5 Pro—
Gemini 2.5 Pro2.2
Arena Text · creative writing Arena Text · creative writing: Human pairwise preferences in the stated text vote pool
Gemini 1.5 Pro1,358
Gemini 2.5 Pro1,443
MMMU-Pro (vision) MMMU-Pro (vision): College-level questions that require understanding images: charts, diagrams, photos
Gemini 1.5 Pro—
Gemini 2.5 Pro74.9
| Benchmark | Gemini 1.5 Pro | Gemini 2.5 Pro |
|---|---|---|
| Humanity's Last Exam | — | 22.5 |
| Terminal-Bench 4.0 | — | 0 |
| AutomationBench-AA | — | 2.2 |
| Arena Text · creative writing | 1,358 | 1,443 |
| MMMU-Pro (vision) | — | 74.9 |
Specs
| Spec | Gemini 1.5 Pro | Gemini 2.5 Pro |
|---|---|---|
| Input, per 1M | — | $1.25 |
| Output, per 1M | — | $10 |
| Cost per task? | — | $0.33 |
| Speed, tok/s | — | 115 |
| Context | — | 1M |
| Weights | Not verified | Closed |
| Released | — | Jun 2025 |
| See images | ? | ✓ |
| Read PDFs | ? | Partial |
| Hear audio | ? | ✓ |
| Watch video | ? | ✓ |
| Call tools | ? | ✓ |
| Force a tool call | ? | Partial |
| Return strict JSON | ? | ✓ |
| Search the web | ? | ✓ |
| Run code | ? | ✓ |
| Use a computer | ? | ? |
What breaks when you switch
Gemini 1.5 Pro → Gemini 2.5 Pro
Nothing known.
Gemini 2.5 Pro → Gemini 1.5 Pro