stepfun
StepFun: Step 3.7 Flash
stepfun/step-3.7-flash
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model.
- Context window: 262,144 tokens
- Input: text, image, video
- Output: text
- Pricing: $0.2/M input tokens, $1.15/M output tokens
RuntimeWire Composite Index
Score: 48.8 — ranked #18 overall (1/4 evaluations covered). View full rankings.
Community sentiment
Mixed (+0) — 0 positive, 0 negative, 3 neutral across 3 community samples from X and the web, as of 2026-10-07.
Community posts largely report on Step 3.7 Flash’s availability and pricing (several platforms listing it as free or on a $0 plan) and do not offer substantive commentary on its performance or behavior.
- “the promo board on Nous Portal right now: 24 models at 25% to 88% off their list price, and 9 models that are completely free. on sale: Mercury 2.5 at 80% off, Kimi K2.6 at 51% off, GPT-5.6 Sol, Sol Pro and Gemini 3.8 Flash at half price, GLM 5.1 at 31% off, and more. free: Space” — X
- “gpt-6 luna, qwen 3.8 and deepseek v4 are FREE right now, and none of these are in the article yet nearest cutoff first: > Nous Portal: Step 3.7 Flash until Oct 1, plus LongCat 2.5 Preview, Solar Pro 4, Laguna S 2.1 on the $0 plan: https://t.co/1ITvg7R9ie > Qoder: Qwen3.8-Flash at” — X
- “FREE AI models the article doesn't have yet: meta's muse spark 1.3, apodex 1.1 mini and the stealth fledge alpha, plus ling 3.1 flash on three more platforms > OpenCode Zen: Fledge Alpha, an unnamed reasoning model with 1M context and image input, plus Meta's Muse Spark 1.3, both” — X
View on OpenRouter.
Model data sourced from OpenRouter.