Grok-3 Mini vs Step-3.5-Flash: Specs & Benchmark Comparison
| Characteristic | Grok-3 Mini | Step-3.5-Flash |
|---|---|---|
| Company | xAI | StepFun |
| Release Date | February 16, 2025 | February 1, 2026 |
| Parameters | — | 196B |
| Multimodal | Yes | Yes |
| Context (input) | 128K | 66K |
| Context (output) | 8K | 8K |
| Input Price / 1M | $0.30 | $0.10 |
| Output Price / 1M | $0.50 | $0.40 |
| Average Score | 0.9 | 0.8 |
| Benchmarks | ||
| AIME 2025 | 0.9 | 1.0 |
Visual Benchmark Comparison
Grok-3 Mini
Step-3.5-Flash
AIME 20250.9 vs 1.0
0.9
1.0
Verdict
Step-3.5-Flash leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Grok-3 Mini — 0.9, Step-3.5-Flash — 0.8.
API Cost
Step-3.5-Flash is 1.6x cheaper: input $0.10/1M vs $0.30/1M tokens.
Context Window
Grok-3 Mini supports a larger context: 128K vs 66K tokens.
Recency
Step-3.5-Flash is newer: released 2/1/2026 vs 2/16/2025.
More About These Models
Related Comparisons
The Grok-3 Mini 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 Grok-3 Mini or Step-3.5-Flash page. See also the complete list of AI model comparisons.