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Gemini 2.5 Flash-Lite Preview (09-2025)

Google · 2025-09-25

Gemini 2.5 Flash-Lite Preview (09-2025) is Google's September 25, 2025 preview update to Gemini 2.5 Flash-Lite, a sparse mixture-of-experts transformer with native multimodal support, offered alongside the stable model. It improves complex instruction following, concision, translation, image understanding, and audio transcription; the hosted model accepts text, images, audio, and video, outputs text, has a 1,048,576-token input limit, and lets developers turn thinking on or off.

Benchmark scores

BenchmarkScore
AA-LCR59.0
AA-LCR v1.164.7
AA-Omniscience Index-42.6
AIME 2024 (avg@8)52.5
AIME 2024-202542.1
AIME 202550.1
AIME 2025 (Artificial Analysis avg@10)68.7
AIME 2025 (avg@8)31.7
Arena Text — Business, Management & Financial Ops (No Style Control)1367
Arena Text — Chinese (No Style Control)1404
Arena Text — Creative Writing (No Style Control)1358
Arena Text — English (No Style Control)1383
Arena Text — Entertainment, Sports & Media (No Style Control)1345
Arena Text — Exclude Ties (No Style Control)1350
Arena Text — Exclude Ties (Style Controlled)1351
Arena Text — Expert (No Style Control)1374
Arena Text — French (No Style Control)1388
Arena Text — French (Style Controlled)1392
Arena Text — German (No Style Control)1389
Arena Text — Hard Prompts (No Style Control)1377
Arena Text — Hard Prompts English (No Style Control)1383
Arena Text — Instruction Following (No Style Control)1355
Arena Text — Japanese (No Style Control)1359
Arena Text — Korean (No Style Control)1350
Arena Text — Legal & Government (No Style Control)1391
Arena Text — Life, Physical & Social Science (No Style Control)1395
Arena Text — Longer Query (No Style Control)1373
Arena Text — Medicine & Healthcare (No Style Control)1388
Arena Text — Multi-turn (No Style Control)1366
Arena Text — Non-English (No Style Control)1369
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