Gemini 2.5 Flash vs Phi 4
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 $141.00/month.
| Gemini 2.5 Flash | Phi 4 | |
|---|---|---|
| Provider | microsoft | |
| Input / 1M | $0.3000 | $0.0700 |
| Output / 1M | $2.50 | $0.1400 |
| Per request (sample) | $0.00155 | $0.000140 |
| Monthly (sample) | $155.00 | $14.00 |
| Context window | 1,000,000 | 16,384 |
| Vision | Yes | No |
| Reasoning | Yes | No |
| Arena · Overall | 1417 | 1217 |
| Arena · Coding | 1370 | — |
| Arena · Math & reasoning | 1385 | — |
| Arena · Agentic / tool use | 1368 | — |
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
Gemini 2.5 Flash and Phi 4 are pre-loaded. Adjust the tokens and monthly volume to see which is cheaper for your usage.
Used unless you set active users below.
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| Phi 4 | Microsoft | $0.000140 | $14.00 | $168.00 | 16,384 |
| Gemini 2.5 Flash | $0.00155 | $155.00 | $1,860.00 | 1,000,000 |
FAQ
Which is cheaper, Gemini 2.5 Flash or Phi 4?
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 $155.00/month.
What is the context window of Gemini 2.5 Flash and Phi 4?
Gemini 2.5 Flash supports 1,000,000 tokens, while Phi 4 supports 16,384 tokens.
Estimates for planning only. Verify current pricing with each provider.