StepFun's Step 5 Preview and StepAudio 3 models: pricing and rankings
Key points
- Step 5 Preview costs $1 per million input tokens and $2.70 per million output tokens, per the sponsored item.
- Step 5 Preview reportedly scores near Claude Opus 5 (Medium) on Artificial Analysis's Intelligence Index, with a 1M-token context.
- Step 5 Preview is on OpenRouter and works in OpenCode, Kilo Code, Cline, omp and Hermes Agent; more integrations are planned.
- StepAudio 3 ASR ranks first in Artificial Analysis non-streaming transcription at 1.7% WER; Realtime ranks first in two conversational categories.
Why it matters for marketers: Teams building coding agents or budgeting for voice features can compare StepFun's per-token prices and benchmark rankings against current options.
via Simon Willison and 2 moreModels