#20of 334Step 5 Preview?Chat · Humanity's Last Exam
Sep 16, 2026Step 5 Previewnewest release
$0.10 / $0.30Step 3.5 Flash 2603?cheapest · per 1M in / out
7categories ranked?Chat · Coding · Agents …
Current lineup?
Chat & Knowledge
Humanity's Last Exam · 334 rankedRankModelScoreIn / out
#20 of 334Step 5 Preview46.5$1 / $2.70#119 of 334Step 3.7 Flash21.4$0.20 / $1.15#179 of 334Step3 VL 10B10.8—Coding
Terminal-Bench 4.0 · 132 rankedRankModelScoreIn / out
#18 of 132Step 5 Preview33.3$1 / $2.70Agents & Tool Use
AutomationBench-AA · 133 rankedRankModelScoreIn / out
#34 of 133Step 5 Preview51$1 / $2.70Writing & Language
Arena Text · creative writing · 195 rankedRankModelEloIn / out
#65 of 195Step 5 Preview1,403$1 / $2.70Vision & Documents
MMMU-Pro (vision) · 124 rankedRankModelScoreIn / out
#40 of 124Step 5 Preview76.4$1 / $2.70#48 of 124Step 3.7 Flash75.3$0.20 / $1.15#86 of 124Step3 VL 10B64—Speech · Text to speech
AA TTS provider voice · 96 rankedRankModelEloPrice
#13 of 96StepAudio 2.5 TTS (Aug 2026)1,216—#32 of 96Step TTS 2 (Mar 2026)1,135$40 / 1M chars#41 of 96Step Audio EditX (Mar 2026)1,099—Speech · Speech to text
AA Speech to text · Recorded audio word error rate · 51 rankedRankModelScore ↓Price
#8 of 51StepAudio 3 ASR2.5—#37 of 51StepAudio 2.5 ASR4.7—StepFun API pricing?
| Model | Input | Output | Cache read | Context | Released ↓ | Status |
|---|---|---|---|---|---|---|
Step 5 Preview | $1 | $2.70 | $0.10 | 1M | Sep 2026 | |
Step 3.7 Flash | $0.20 | $1.15 | $0.04 | 256K | May 2026 | |
Step 3.5 Flash 2603 | $0.10 | $0.30 | $0.02 | 256K | Apr 2026 | |
Step 1o Turbo Vision | $0.36 | $1.15 | $0.07 | — | — |
| Model | Type ↑ | Price | Released | Status |
|---|---|---|---|---|
Step Image Edit 2 | Image | $0.003 / image | May 2026 | |
Step1X Edit | Image | $0.03 / image | Apr 2025 | |
StepAudio 2.5 Realtime | Speech · Realtime | $1.50 / 1M tok | — | |
Step ASR | Speech · Speech to text | $0.002 / min | — | |
Step ASR 1.1 | Speech · Speech to text | $0.005 / min | — | |
Step ASR 1.1 Streaming | Speech · Speech to text | $0.006 / min | — | |
Step TTS 2 (Mar 2026) | Speech · Text to speech | $40 / 1M chars | Feb 2026 |
22 more without a listed priceFull StepFun pricing: cache, batch, FAQ →
Model lines?
Step Flash
Retired & older
| Model | Status | Replace with | Still on | Released |
|---|---|---|---|---|
Retired | Retired | OpenRouter | Apr 2026 | |
Retired | Retired | — | Feb 2026 |
| Model | Status | Replace with | Still on | Released |
|---|---|---|---|---|
Retired | Retired | OpenRouter | Apr 2026 | |
Retired | Retired | — | Feb 2026 |
