Model Comparison

Step 3.5 Flash 2603
vs. Claude Fable 5.2 (Max, Default Fallback)

Comparing 2 AI models · 0 benchmarks · StepFun, Anthropic

Recommended Pick

Step 3.5 Flash 26036 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 80x cheaper on input tokens than Claude Fable 5.2 (Max, Default Fallback).

Speed gap

Step 3.5 Flash 2603 generates about 1.8x as many tokens per second as Claude Fable 5.2 (Max, Default Fallback).

Top-pick rationale

Step 3.5 Flash 2603 wins 6 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

Step 3.5 Flash 2603

StepFun

Waiting

TTFT

—

Time

—

tok/s

—

Tokens

—

Cost

—

Waiting

Claude Fable 5.2 (Max, Default Fallback)

Anthropic

Waiting

TTFT

—

Time

—

tok/s

—

Tokens

—

Cost

—

Waiting

Which answer was more useful?

Secure AI Chat made in Europe

Chat with EU-Hosted Models like Deepseek, Qwen & Kimi: open-weight, transparent, no lock-in.

Chat for free

EU-hosted open models, one API

Servers in Germany & Finland. Operated by a German company under the GDPR, DPA available, ISO 27001-certified data centres.

Get API access

Full Comparison

Metric	Top Pick St Step 3.5 Flash 2603 StepFun	An Claude Fable 5.2 (Max, Default Fallback) Anthropic
Pricing per 1M tokens
Input Cost	$0.10/1M	$8.00/1M
Output Cost	$0.30/1M	$40.00/1M
Blended (3:1)	$0.15/1M	$16.00/1M
Specifications
Organization	StepFun	Anthropic
Release Date	Apr 2, 2026	Nov 9, 2026
Performance & Speed
Throughput	166.2 tok/s	94.1 tok/s
TTFT	3360ms	244750ms
Latency	15390ms	244750ms
Composite Indices
Value Score	—	100.0
Reasoning Score	—	64.6
Intelligence	—	64.6