Model Comparator

Compare up to four models using the same criteria.

Step 3.7 Flash
StepFun
Claude 4.5 Sonnet (Non-reasoning)
Anthropic

Differences only

✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.

Model Comparator
Metrics	Step 3.7 Flash StepFun	Claude 4.5 Sonnet (Non-reasoning) Anthropic
Intelligence	Best: 19.5	19.3
Coding	39.6	Best: 52.1
Math	—	37
Agentic	—	15.8
Speed	Best: 185 t/s	41 t/s
TTFT	2.53 s	Best: 1.09 s
Input · $ / 1M tokens	Best: $0.20	$3×15 relative to the lowest price among the compared models
Output · $ / 1M tokens	Best: $1.15	$15×13 relative to the lowest price among the compared models
Context window	262K	Best: 1M
Reasoning	Yes	No
Open weights	Yes	No

Intelligence

Step 3.7 Flash: Best: 19.5
Claude 4.5 Sonnet (Non-reasoning): 19.3

Coding

Step 3.7 Flash: 39.6
Claude 4.5 Sonnet (Non-reasoning): Best: 52.1

Math

Step 3.7 Flash: —
Claude 4.5 Sonnet (Non-reasoning): 37

Agentic

Step 3.7 Flash: —
Claude 4.5 Sonnet (Non-reasoning): 15.8

Speed

Step 3.7 Flash: Best: 185 t/s
Claude 4.5 Sonnet (Non-reasoning): 41 t/s

TTFT

Step 3.7 Flash: 2.53 s
Claude 4.5 Sonnet (Non-reasoning): Best: 1.09 s

Input · $ / 1M tokens

Step 3.7 Flash: Best: $0.20
Claude 4.5 Sonnet (Non-reasoning): $3×15 relative to the lowest price among the compared models

Output · $ / 1M tokens

Step 3.7 Flash: Best: $1.15
Claude 4.5 Sonnet (Non-reasoning): $15×13 relative to the lowest price among the compared models

Context window

Step 3.7 Flash: 262K
Claude 4.5 Sonnet (Non-reasoning): Best: 1M

Reasoning

Step 3.7 Flash: Yes
Claude 4.5 Sonnet (Non-reasoning): No

Open weights

Step 3.7 Flash: Yes
Claude 4.5 Sonnet (Non-reasoning): No

Each reasoning level remains a separate configuration.

Score and cost

Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.

Step 3.7 Flash19.5 · $0.438
Claude 4.5 Sonnet (Non-reasoning)19.3 · $6