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Comparison

Deepseek V3.1 Terminus vs Step 3.5 Flash

Side-by-side comparison of DeepSeek Deepseek V3.1 Terminus and Stepfun Step 3.5 Flash. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding84 / 79Math84 / 79Reasoning84 / 79Language84 / 79

Deepseek V3.1 Terminus

83.5Frontier

Step 3.5 Flash

79.3Frontier

Deepseek V3.1 Terminus
Step 3.5 Flash

Input Price (per 1M)

$0.2700
$0.0900
67% less

Output Price (per 1M)

$0.9500
$0.3000
68% less

Context Window

163.8K
262.1K
1.6x

Max Output

32.8K
2.0x
16.4K

DeepSeek

Deepseek V3.1 Terminus

vs

Stepfun

Step 3.5 Flash

Pricing per 1M Tokens

$0.2700

Input

Input

$0.0900

67% cheaper

Input

$0.9500

Output

Output

$0.3000

68% cheaper

Output

Token Limits

Context

163.8K

Context

Context

262.1K

Max Output

32.8K

Max Output

Max Output

16.4K

Tools
Tools

Deepseek V3.1 Terminus Details

$0.2700 in / $0.9500 out

Step 3.5 Flash Details

$0.0900 in / $0.3000 out

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