Gemini 3.1 Pro Preview vs Gemini 4 Argon
Different efforts: thinking · high · Compare all at high
Humanity's Last Exam Humanity's Last Exam: Very hard expert questions across many fields, written to stump today’s models
Gemini 3.1 Pro Preview47
Gemini 4 Argon57.1
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 3.1 Pro Preview4
Gemini 4 Argon57.1
AutomationBench-AA AutomationBench-AA: Agents orchestrate SaaS workflows through APIs; objectives receive credit only when the task has no guardrail violation
Gemini 3.1 Pro Preview35.4
Gemini 4 Argon77.5
Arena Text · creative writing Arena Text · creative writing: Human pairwise preferences in the stated text vote pool
Gemini 3.1 Pro Preview1,481
Gemini 4 Argon1,516
MMMU-Pro (vision) MMMU-Pro (vision): College-level questions that require understanding images: charts, diagrams, photos
Gemini 3.1 Pro Preview82.4
Gemini 4 Argon—
| Benchmark | Gemini 3.1 Pro Preview | Gemini 4 Argon |
|---|---|---|
| Humanity's Last Exam | 47 | 57.1 |
| Terminal-Bench 4.0 | 4 | 57.1 |
| AutomationBench-AA | 35.4 | 77.5 |
| Arena Text · creative writing | 1,481 | 1,516 |
| MMMU-Pro (vision) | 82.4 | — |
Specs
| Spec | Gemini 3.1 Pro Preview | Gemini 4 Argon |
|---|---|---|
| Input, per 1M | $2 | !$2 |
| Output, per 1M | $12 | !$10 |
| Cost per task? | $1.30 | $1.99 |
| Speed, tok/s | 115 | 84 |
| Context | 1M | 1M |
| Weights | Closed | Closed |
| Released | Feb 2026 | Oct 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
Gemini 3.1 Pro Preview → Gemini 4 Argon
Synchronous output stops at 65,536›
With background false, output limits above 65,536 tokens return HTTP 400; stay at or below that limit.
Sampling parameters are ignored›
temperature, top_p and top_k are ignored; remove them from requests.
No explicit caching›
Explicit caching is unavailable; omit explicit cache requests.
Gemini 4 Argon → Gemini 3.1 Pro Preview
Cannot use both thinking controls›
Setting thinking_level and legacy thinking_budget together returns HTTP 400; use only one.