Phi 4 vs Step 3.7 Flash
Cost and capability comparison. For a sample workload of 1,000 input and 500 output tokens across 100,000 requests/month, Phi 4 is cheaper by about $60.00/month.
| Phi 4 | Step 3.7 Flash | |
|---|---|---|
| Provider | microsoft | stepfun |
| Input / 1M | $0.0700 | $0.1850 |
| Output / 1M | $0.1400 | $1.11 |
| Per request (sample) | $0.000140 | $0.000740 |
| Monthly (sample) | $14.00 | $74.00 |
| Context window | 16,384 | 256,000 |
| Vision | No | No |
| Reasoning | No | Yes |
| Arena · Overall | 1217 | — |
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 28 July 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
Compare on your own workload
Phi 4 and Step 3.7 Flash are pre-loaded. Adjust the tokens and monthly volume to see which is cheaper for your usage.
Used unless you set active users below.
Results update automatically as you type.
| Phi 4 | Microsoft | $0.000140 | $14.00 | $168.00 | 16,384 |
| Step 3.7 Flash | StepFun | $0.000740 | $74.00 | $888.00 | 256,000 |
FAQ
Which is cheaper, Phi 4 or Step 3.7 Flash?
For a workload of 1,000 input and 500 output tokens over 100,000 requests/month, Phi 4 is cheaper, costing about $14.00/month versus $74.00/month.
What is the context window of Phi 4 and Step 3.7 Flash?
Phi 4 supports 16,384 tokens, while Step 3.7 Flash supports 256,000 tokens.
Estimates for planning only. Verify current pricing with each provider.