Model Comparator
Compare up to four models using the same criteria.
2 models compared
- Claude 4 Sonnet (Non-reasoning)
Anthropic
- Step 3.5 Flash
StepFun
✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.
| Metrics | Claude 4 Sonnet (Non-reasoning) Anthropic | Step 3.5 Flash StepFun | Add a model · 2/4 |
|---|---|---|---|
| Intelligence | 16.6 | 16.6 | |
| Coding | 37.6 | — | |
| Math | 38 | — | |
| Speed | — | 138 t/s | |
| TTFT | — | 3.31 s | |
| Input · $ / 1M tokens | — | $0.10 | |
| Output · $ / 1M tokens | — | $0.30 | |
| Context window | Best: 1M | 256K | |
| Reasoning | No | Yes | |
| Open weights | No | Yes |
Intelligence
- Claude 4 Sonnet (Non-reasoning)
- 16.6
- Step 3.5 Flash
- 16.6
Coding
- Claude 4 Sonnet (Non-reasoning)
- 37.6
- Step 3.5 Flash
- —
Math
- Claude 4 Sonnet (Non-reasoning)
- 38
- Step 3.5 Flash
- —
Speed
- Claude 4 Sonnet (Non-reasoning)
- —
- Step 3.5 Flash
- 138 t/s
TTFT
- Claude 4 Sonnet (Non-reasoning)
- —
- Step 3.5 Flash
- 3.31 s
Input · $ / 1M tokens
- Claude 4 Sonnet (Non-reasoning)
- —
- Step 3.5 Flash
- $0.10
Output · $ / 1M tokens
- Claude 4 Sonnet (Non-reasoning)
- —
- Step 3.5 Flash
- $0.30
Context window
- Claude 4 Sonnet (Non-reasoning)
- Best: 1M
- Step 3.5 Flash
- 256K
Reasoning
- Claude 4 Sonnet (Non-reasoning)
- No
- Step 3.5 Flash
- Yes
Open weights
- Claude 4 Sonnet (Non-reasoning)
- No
- Step 3.5 Flash
- Yes
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 3.5 Flash16.6 · $0.15
Not plotted for lack of data on these axes: Claude 4 Sonnet (Non-reasoning).