Model Comparison

Seed-OSS-36B-Instruct
vs. Step 3.5 Flash 2603

Comparing 2 AI models · 0 benchmarks · ByteDance Seed, StepFun

Recommended Pick

Step 3.5 Flash 26035 metric wins

Strongest on: Input price, Output price, Blended price

Lowest Price

Step 3.5 Flash 2603

$0.10/1M input price

Differences That Matter

Price gap

Step 3.5 Flash 2603 is 2.1x cheaper on input tokens than Seed-OSS-36B-Instruct.

Speed gap

Step 3.5 Flash 2603 generates about 4.0x as many tokens per second as Seed-OSS-36B-Instruct.

Top-pick rationale

Step 3.5 Flash 2603 wins 5 measurable categories, including Input price, Output price, Blended price, Throughput.

Live compare

Response Face-Off

Run one prompt through the selected models and compare response quality with live speed and cost context.

10 comparisons left in 24h

Seed-OSS-36B-Instruct

ByteDance Seed

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Step 3.5 Flash 2603

StepFun

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Full Comparison

Metric	By Seed-OSS-36B-Instruct ByteDance Seed	Top Pick St Step 3.5 Flash 2603 StepFun
Pricing per 1M tokens
Input Cost	$0.21/1M	$0.10/1M
Output Cost	$0.57/1M	$0.30/1M
Blended (3:1)	$0.30/1M	$0.15/1M
Specifications
Organization	ByteDance Seed	StepFun
Release Date	Aug 20, 2025	Apr 2, 2026
Performance & Speed
Throughput	39.3 tok/s	158.1 tok/s
TTFT	2820ms	3450ms
Latency	53710ms	16100ms