Solar Pro 3 vs Solar Pro 4
Different efforts: high · thinking
Humanity's Last Exam Humanity's Last Exam: Very hard expert questions across many fields, written to stump today’s models
Solar Pro 310.3
Solar Pro 429.8
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
Solar Pro 30
Solar Pro 40
AutomationBench-AA AutomationBench-AA: Agents orchestrate SaaS workflows through APIs; objectives receive credit only when the task has no guardrail violation
Solar Pro 30.5
Solar Pro 413.6
Arena Text · creative writing Arena Text · creative writing: Human pairwise preferences in the stated text vote pool
Solar Pro 3—
Solar Pro 41,309
| Benchmark | Solar Pro 3 | Solar Pro 4 |
|---|---|---|
| Humanity's Last Exam | 10.3 | 29.8 |
| Terminal-Bench 4.0 | 0 | 0 |
| AutomationBench-AA | 0.5 | 13.6 |
| Arena Text · creative writing | — | 1,309 |
Specs
| Spec | Solar Pro 3 | Solar Pro 4 |
|---|---|---|
| Input, per 1M | $0.15 | $0.30 |
| Output, per 1M | $0.60 | $1.20 |
| Cost per task? | $0.079 | $0.71 |
| Speed, tok/s | 151 | 119 |
| Context | 131K | 524K |
| Weights | Closed | Closed |
| Released | Apr 2026 | Aug 2026 |
| See images | — | — |
| Read PDFs | — | — |
| Hear audio | — | — |
| Watch video | — | — |
| Call tools | ✓ | ✓ |
| Force a tool call | Partial | Partial |
| Return strict JSON | ✓ | ✓ |
| Search the web | ? | ? |
| Run code | ? | ? |
| Use a computer | ? | ? |
What breaks when you switch
Solar Pro 3 → Solar Pro 4
Nothing known.
Solar Pro 4 → Solar Pro 3