This model is deprecated. We only continue performance benchmarking for the default 10k input token workload. Results for other workloads are historical and no longer updated.

StepFun has launched a newer model, Step 3.7 Flash. We suggest considering it instead.

For more information, see comparison of Step 3.7 Flash to other models and API provider benchmarks for Step 3.7 Flash.

Proprietary model

Released 2026年4月

Step 3.5 Flash 2603 API 服务商基准测试与分析

模型比较

本分析旨在帮助你根据使用场景,选择 Step 3.5 Flash 2603 的最佳 API 服务商。

速度最快

#1
StepFunStepFun
140.2 t/s

输出速度

共 1 家服务商

延迟最低

#1
StepFunStepFun
17.81 s

首个答案 Token 延迟

共 1 家服务商

价格最低

#1
StepFunStepFun
$0.06

每 100 万 token 的混合价格

共 1 家服务商

可通过 StepFun 使用 Step 3.5 Flash 2603。

亮点

Output tokens per second · Higher is better
Seconds · Lower is better
USD per 1M tokens (blended) · Lower is better

价格

Pricing: Cache Hit, Input, and Output

Price (USD per M Tokens) · Lower is better · 10,000 input tokens

Pricing: Blended Price

Blended at 7:2:1 (cache-input-output) · USD per 1M tokens (blended) · Lower is better

Pricing: Cache Discount

1 - (cache hit price / input price) · Higher is better

Output Speed vs. Price

Blended at 7:2:1 (cache-input-output) · Output speed: output tokens per second · USD per 1M tokens (blended)
Most attractive quadrant

速度

按输出速度(每秒 token 数)衡量

Output Speed: Step 3.5 Flash 2603

Output speed: output tokens per second · 10,000 input tokens

Latency vs. Output Speed

Latency: seconds to first token received · Output speed: output tokens per second · 10,000 input tokens
Most attractive quadrant

延迟

按首 Token 延迟(秒)衡量

首个答案 Token 延迟

Seconds to first token received · Lower is better · 10,000 input tokens

端到端响应时间

Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed

端到端响应时间

Seconds to output 500 tokens, including reasoning model 'thinking' time · Lower is better · 10,000 input tokens

关键比较指标与 API 功能

StepFun 标志StepFun
256k
专有
--
140
3.55
21.38
14.27

常见问题

关于 Step 3.5 Flash 2603 服务商的常见问题