Step 2 (16K)
stepfun/step-2-16kPor StepFun · lanzado 2025-01-01 · fecha de conocimiento: 2024-06
Prices in USD per 1M tokens. Unknown means the provider does not publish per-token pricing.
Capacidades
Model fit scores
0–100 · higher is betterThese scores reward declared capabilities, context size, price and provider availability — they are not benchmark results. Use them as a directional signal alongside your own evaluation.
Coding51
- Tool calling40/40
- Structured output0/20
- Reasoning10/10
- Context window (100K → 1M)0/20
- Provider availability1/10
Agents56
- Tool calling35/35
- Structured output0/25
- Reasoning15/15
- Output token limit5/15
- Provider availability1/10
JSON / structured output30
- Structured output / JSON mode0/50
- Tool calling20/20
- Temperature control10/10
- Price-friendly for high-volume0/20
Cost efficiency34
- Headline price (log-scaled)29/95
- Has prompt-cache pricing5/5
Long context0
- Context ≥ 100K0/100
Production-readiness58
- Number of independent providers5/40
- Has published per-token price20/20
- Context window ≥ 8K8/15
- No data inconsistencies across providers10/10
- Official model (not derivative)15/15
Cost Efficiency Index
Open full calculator →Estimated cost using the recommended provider's headline rate. Each scenario fixes average input/output tokens — the assumptions are shown in the third column.
| Scenario | Cost | Assumption |
|---|---|---|
RAG answer per 1,000 RAG answers | $34.27 $0.03 per request | 5K input tokens (query + 4 retrieved chunks of ~1K each) and a 500-token answer. Typical SaaS knowledge-base bot. |
Support ticket triage per 10,000 tickets | $68.54 < $0.01 per request | 1K input tokens (ticket body + system prompt) and a 100-token JSON classification reply. High-volume customer support. |
Data extraction per 1,000 documents | $18.64 $0.02 per request | 2K input tokens (a single document page) and a 500-token JSON extraction. ETL / invoice / form pipelines. |
Code review per 1,000 PRs | $58.12 $0.06 per request | 8K input tokens (diff + surrounding files) and a 1K-token review comment. PR-bot workloads. |
Agent step per 1,000 steps | $72.38 $0.07 per request | 12K input tokens (long-running tool history) and a 600-token tool-call decision. Cost per agent step. |
Detalle de precios
Precio recomendado de stepfun · step-2-16k
Disponible en 1 proveedores
| Proveedor | ID de modelo del proveedor | Entrada / 1M | Salida / 1M | Contexto | Lanzado |
|---|---|---|---|---|---|
| StepFun stepfun | step-2-16k | $5.21 | $16.44 | 16K | 2025-01-01 |
Frequently asked questions
How much does Step 2 (16K) cost?
Step 2 (16K) costs $5.21 per 1M input tokens and $16.44 per 1M output tokens, sourced from stepfun. Cache reads, audio tokens and >200K-context tiers (where applicable) are listed in the Pricing detail block above.
What is the context window of Step 2 (16K)?
Step 2 (16K) has a context window of 16K tokens, with a max output of 8K tokens per reply. This is the total combined size of prompt + completion.
Does Step 2 (16K) support tool calling?
Yes. Step 2 (16K) supports tool calling (function calling). This makes it suitable for production agent and automation workloads where the model has to invoke external functions reliably.
Does Step 2 (16K) support structured output / JSON mode?
Support for structured output / JSON-schema-constrained decoding is not reported for Step 2 (16K) in our data source. Verify with StepFun's official documentation before relying on it in production.
Can Step 2 (16K) accept image input?
No. Step 2 (16K) only accepts text as input. If you need image input, see our /capabilities/vision list for current vision-capable models.
Is Step 2 (16K) open-weight?
No. Step 2 (16K) is a proprietary model — only StepFun (and any approved hosting partners) can serve it. The pricing above reflects the cheapest API access.
What are the best alternatives to Step 2 (16K)?
If Step 2 (16K) doesn't fit, consider Step 3.5 Flash, Step 3.5 Flash 2603, Step 1 (32K). Each one targets the same use case — see the Related links below for direct head-to-head pages.
Where does this data come from?
All numbers come from the public models.dev API and are normalised into a single canonical model record. We re-pull daily and write any changes (price, context, capability) to the /changelog page.
Explore more
More StepFun models
- Step 3.5 Flash$0.10 in / $0.29 out
- Step 3.5 Flash 2603$0.10 in / $0.30 out
- Step 1 (32K)$2.05 in / $9.59 out
Capability lists this model is in
Última actualización:
Data is sourced from models.dev and normalized for comparison. Prices and capabilities may change. Always verify critical production decisions with the provider's official documentation.