iPhone 17 Pro vs Galaxy S25 Ultra
The iPhone 17 Pro runs Gemma 4 E2B about 2.8 times as fast as the Galaxy S25 Ultra (62 vs 22 tokens per second), but starts answering 0.2 s later.
Every model both run
| Model | iPhone 17 Pro | Galaxy S25 Ultra |
|---|---|---|
| Gemma 4 E2B | 62 tok/sfirst word 0.7 s | 22 tok/sfirst word 0.5 s |
| Qwen3.5 2B | 46 tok/sfirst word 1.1 s | 16 tok/sfirst word 0.6 s |
Measured only on the iPhone 17 Pro: Apple's on-device model (iOS 27) and Gemma 4 E4B.
Every model on the iPhone 17 ProEvery model on the Galaxy S25 UltraCompare other devices
Questions
- Is the iPhone 17 Pro faster than the Galaxy S25 Ultra for AI?
- The iPhone 17 Pro is faster on 2 of the 2 models both run in Loci. The iPhone 17 Pro runs Gemma 4 E2B about 2.8 times as fast as the Galaxy S25 Ultra (62 vs 22 tokens per second), but starts answering 0.2 s later.
- Which runs Gemma 4 E2B faster, the iPhone 17 Pro or the Galaxy S25 Ultra?
- The iPhone 17 Pro runs Gemma 4 E2B about 2.8 times as fast as the Galaxy S25 Ultra (62 vs 22 tokens per second), but starts answering 0.2 s later.
- Which runs Qwen3.5 2B faster, the iPhone 17 Pro or the Galaxy S25 Ultra?
- The iPhone 17 Pro runs Qwen3.5 2B about 2.9 times as fast as the Galaxy S25 Ultra (46 vs 16 tokens per second), but starts answering 0.4 s later.
Last 30 days, through · updated daily
How these speeds are measured
- Every number comes from real chats in Loci, timed on the device that wrote the answer, with Loci's default settings.
- Tokens per second is how fast an answer is written once it starts. On phones, four characters of text count as one token for every model; on a Mac, Loci counts the model's own tokens. Reading pace is about 5.
- First word is how long an answer takes to start after you send a message. Longer conversations take longer.
- Each device counts once. The large number is the median; the typical range covers the middle half of devices.
- Each phone speed comes from at least 10 phones. Fewer Macs run Loci, so each Mac speed says how many Macs it comes from.
- On phones, answers written in Low Power Mode or Battery Saver, in the background, or with web search or other tools are left out.