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Gemini 2.5 Flash

Google · 2025-05-20

Gemini 2.5 Flash is Google's speed-optimized multimodal reasoning checkpoint first released as gemini-2.5-flash-preview-05-20 on May 20, 2025. Google promoted the same model unchanged to the stable gemini-2.5-flash endpoint on June 17, 2025; the GA milestone changed pricing and availability, not the underlying model. It supports controllable thinking and a 1,048,576-token context window.

Benchmark scores

BenchmarkScore
A-Fantasia55.3
A-Fantasia (Valid Attempts with Retries)55.3
A-Fantasia Backwards Spelling64.0
A-Fantasia Chess27.0
A-Fantasia Chess (Valid Attempts with Retries)27.0
A-Fantasia Cube (Valid Attempts with Retries)75.0
A-Fantasia Cube Rotation75.0
A-Fantasia Spelling (Valid Attempts with Retries)64.0
AA-LCR61.7
AA-LCR v1.165.3
AA-Omniscience Index-29.8
Agent Red Teaming k=100 (CAIS)91.9
Aider Polyglot56.7
AIME 202575.7
AIME 2025 (Artificial Analysis avg@10)73.3
AIME 2025 (MathArena repeated-run mean)70.8
ALE-Bench1022
ARC-AGI-1 Semi-Private33.3
ARC-AGI-22.5
Arena Text — Business, Management & Financial Ops (No Style Control)1404
Arena Text — Chinese (No Style Control)1450
Arena Text — Creative Writing (No Style Control)1400
Arena Text — English (No Style Control)1418
Arena Text — Entertainment, Sports & Media (No Style Control)1393
Arena Text — Exclude Ties (No Style Control)1404
Arena Text — Exclude Ties (Style Controlled)1394
Arena Text — Expert (No Style Control)1426
Arena Text — French (No Style Control)1432
Arena Text — French (Style Controlled)1427
Arena Text — German (No Style Control)1418
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