Step 3.5 Flash
Open weights
step-3.5-flash is an AI model from Stepfun, released with open weights.
- Publisher
- Stepfun
- Family
- Step
- Context
- 262K
- Input
- Output
- License
- apache-2.0
- Released
- 2 Apr 2026
Cite
Notes
Only stored in your browser.
Context
262K
Input
$0.10
/1M tok
Output
$0.30
/1M tok
Blended
$0.15
#205/ 458/1M · 3:1
Speed
263
#13/ 458tok/s
Cache read
$0.02
0.20x input
Price & speed via Artificial Analysis · ranked across tracked models · caching via OpenRouter
Reported on 8 evals across 6 domains - best 87.4% on τ²-bench (Tau²-bench) · #50 of 343