Step 5 Preview step-5-preview
stepfun-ai · stepfun-ai
unranked — no quality signals yet
- params
- 604.3B
- arch
- moe
- context
- 1024k
- license
- other open weights
- released
- Sep 2026
- downloads/30d
- 3.1k
# architecture
- layers
- 92
- d_model
- 4096
- heads
- 64q / 64kv
- head dim
- 192
- experts
- top-8 of 352
- vocab
- 128896
- family
- step5
signal path of one layer, generated from the registry's structured fields — dimension lines quote the model's real numbers; an MoE trace forks at the router, a dense trace runs straight through. Geometry fields come from the repo's config.json.
# trend
collecting history — trends appear after a few daily runs.
# where to run
| provider | quant | ctx | $/M in | $/M out | $/M cache | price src | tps | uptime | ✓ |
|---|---|---|---|---|---|---|---|---|---|
| DeepInfra | fp8 | 1024k | $1.00 | $2.70 | — | deepinfra | — | 100.0% | ✓ |
| Featherless | fp4 | 256k | $1.00 | $2.70 | $0.10 | via openrouter | — | 100.0% | |
| InferenceNet | fp4 | 1024k | $1.00 | $2.70 | $0.05 | via openrouter | — | 100.0% | |
| InferenceNet | fp4 | 1024k | $1.00 | $2.70 | $0.05 | via openrouter | — | 100.0% | |
| Novita | 1000k | $1.00 | $2.70 | — | novita | — | — | ✓ | |
| Opencode Go | 1000k | $1.00 | $2.70 | — | via litellm | — | — | ||
| StepFun | fp8 | 1000k | $1.00 | $2.70 | $0.10 | via openrouter | — | 100.0% |
sorted by blended price ((3·input + output) / 4 per 1M) · ✓ = the provider's own catalog confirms the offer · "via …" prices are what the aggregator routing the offer charges, not the provider's own list price
source aliases
- epoch
Step 5 Preview- openrouter
stepfun/step-5-preview