iPhone 13 vs iPhone 15

The iPhone 15 runs Qwen3.5 2B about 48% faster than the iPhone 13 (26 vs 17 tokens per second) and starts answering 0.2 s sooner.

Every model both run

ModeliPhone 13iPhone 15
Gemma 4 E2B26 tok/sfirst word 3.1 s35 tok/sfirst word 3.1 s
Qwen3.5 2B17 tok/sfirst word 3.2 s26 tok/sfirst word 3.0 s
Questions
Is the iPhone 13 faster than the iPhone 15 for AI?
The iPhone 15 is faster on 2 of the 2 models both run in Loci. The iPhone 15 runs Qwen3.5 2B about 48% faster than the iPhone 13 (26 vs 17 tokens per second) and starts answering 0.2 s sooner.
Which runs Gemma 4 E2B faster, the iPhone 13 or the iPhone 15?
The iPhone 15 runs Gemma 4 E2B about 33% faster than the iPhone 13 (35 vs 26 tokens per second).
Which runs Qwen3.5 2B faster, the iPhone 13 or the iPhone 15?
The iPhone 15 runs Qwen3.5 2B about 48% faster than the iPhone 13 (26 vs 17 tokens per second) and starts answering 0.2 s sooner.

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.