StepFun: Step 3.5 Flash (stepfun/step-3.5-flash) is a chat model from openrouter with a 262.1K-token context window; capabilities tools, reasoning; input text; output text.
262.1KContext
65.5KMax output
$0.1$ / 1M in
26Intelligence
294.218tok / s
Pricing
Input
$0.1 / 1M tokens
Output
$0.3 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: openrouter. Last verified 2026-07-24.
Benchmarks
Intelligence index
26
Cited from a public third-party leaderboard — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-07-24.
Performance
Throughput
294.218 tokens/s
Latency (TTFT)
0.744 s
Cited speed metrics — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-07-24.