Step 3.5 Flash 2603
By StepFun · released 2026-04-02 (6 months) · snapshot 2026-10-24
- Intelligence index
- 17.00
- Price per 1M tokens (in / out)
- $0.10 / $0.30
- End-to-end time
- 21.0s
Is Step 3.5 Flash 2603 on the Pareto frontier, and what beats it?
Not ranked · benchmark data missing
Step 3.5 Flash 2603 does not report both selected axis metrics.
Open in the picker Daily check URL: 200 on the frontier, 409 once beaten
Step 3.5 Flash 2603 today
Incomplete benchmark data
Intelligence and benchmark cost are both required to place this model on the frontier. Missing data is not a performance verdict.
- Intelligence index
- 17.00
- Benchmark cost
- Not reported
- Input / 1M tokens
- 0.10
- Output / 1M tokens
- 0.30
- Context window
- 256k
Intelligence: Artificial Analysis Intelligence Index. Cost: total cost to run that benchmark, so reasoning tokens count. API id: step-3-5-flash.
Compare head to head
Should you use Step 3.5 Flash 2603?
Should you use Step 3.5 Flash 2603?
No verdict: it does not report both intelligence and benchmark cost.
What is better and cheaper than Step 3.5 Flash 2603?
Other models on the intelligence-vs-cost frontier
How much does Step 3.5 Flash 2603 cost?
$0.10/$0.30 in/out per 1M tokens, and - to run the full Artificial Analysis Intelligence Index, the honest all-in number for reasoning models.
Frontier membership by axis pair
Other axis pairs where Step 3.5 Flash 2603 is Pareto-optimal.
| Y axis | X axis | On the frontier |
|---|---|---|
| AA intelligence index | AA total cost to run (USD) | no data |
| AA intelligence index | End-to-end total seconds | |
| AA intelligence index | Output speed tokens/sec |
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/models/step-3-5-flash · Markdown: /api/v1/models/step-3-5-flash?format=md · llms.txt · agent skill