Doubao Seed 2.0 Mini vs Step 3.5 Flash
Step 3.5 Flash is cheaper on output tokens, while Step 3.5 Flash offers a larger context window. Choose Doubao Seed 2.0 Mini or Step 3.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Doubao Seed 2.0 Mini | Step 3.5 Flash |
|---|---|---|
| Provider | NanoGPT | StepFun |
| Input / 1M tokens | $0.05 | $0.10 |
| Output / 1M tokens | $0.48 | $0.30 |
| Context window | 256K | 262K |
| Parameters | — | — |
| Open weights | No | Yes |
| Released | Feb 2026 | Jan 2026 |
| LMArena (Chatbot Arena) Elo score | — | 1403 |
FAQ
Is Doubao Seed 2.0 Mini or Step 3.5 Flash cheaper?
Step 3.5 Flash is cheaper on output tokens ($0.30 vs $0.48 per 1M).
Which has the larger context window, Doubao Seed 2.0 Mini or Step 3.5 Flash?
Step 3.5 Flash has the larger context window (262K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.