Gemini 3 Pro vs Step-3.5-Flash: Specs & Benchmark Comparison
| Characteristic | Gemini 3 Pro | Step-3.5-Flash |
|---|---|---|
| Company | StepFun | |
| Release Date | November 17, 2025 | February 1, 2026 |
| Parameters | — | 196B |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 66K |
| Context (output) | 66K | 8K |
| Input Price / 1M | $2.00 | $0.10 |
| Output Price / 1M | $12.00 | $0.40 |
| Average Score | 0.9 | 0.8 |
| Benchmarks | ||
| AIME 2025 | 1.0 | 1.0 |
Visual Benchmark Comparison
Gemini 3 Pro
Step-3.5-Flash
AIME 20251.0 vs 1.0
1.0
1.0
Verdict
Step-3.5-Flash leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Gemini 3 Pro — 0.9, Step-3.5-Flash — 0.8.
API Cost
Step-3.5-Flash is 28.0x cheaper: input $0.10/1M vs $2.00/1M tokens.
Context Window
Gemini 3 Pro supports a larger context: 1M vs 66K tokens.
Recency
Step-3.5-Flash is newer: released 2/1/2026 vs 11/17/2025.
More About These Models
Related Comparisons
The Gemini 3 Pro and Step-3.5-Flash comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Gemini 3 Pro or Step-3.5-Flash page. See also the complete list of AI model comparisons.