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Gemini 1.5 Flash

Google · Gemini Flash line · lightweight

Released May 14, 2024Replaced by Gemini 1.5 Flash-8B

Gemini 1.5 Flash was released by Google on May 14, 2024, as a lightweight model in the Gemini Flash line.

  • Release 1 of 14 in the Gemini Flash line.
  • The first release in this line.
  • Replaced by Gemini 1.5 Flash-8B on August 27, 2024, 105 days later.
  • These days the line ships a new model about every 63 days.

What changed

Gemini 1.5 Flash opened in public preview in Google AI Studio and Vertex AI with a 1 million token context window.

Sources: Google

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Where the Gemini Flash line stands

Gemini 3.8 Flash is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.

Gemini Flash

Google · lightweight line

Latest: Gemini 3.8 Flash · Sep 2, 2026

Mid-cycle52 days since the last release · usual gap 63 days

Scores 89.4% on Terminal-Bench 2.1, up from 85.8% for Gemini 3.7 Flash, at the same introductory price as Gemini 3.7 Flash.

What changed in Gemini 3.8 Flash →
Days since last release
52
days
Usual gap
63
days
Recent gaps
Gemini 3.8 Flash · Sep 2026
20
Gemini 3.7 Flash · Aug 2026
23
Gemini 3.5 Flash-Lite · Jul 2026
63
Gemini 3.5 Flash · May 2026
77

Every Gemini Flash release

Newest first. See the full line with every card →

  1. Sep 2, 2026Gemini 3.8 Flash
  2. Aug 13, 2026Gemini 3.7 Flash
  3. Jul 21, 2026Gemini 3.6 Flash
  4. Jul 21, 2026Gemini 3.5 Flash-Lite
  5. May 19, 2026Gemini 3.5 Flash
  6. Mar 3, 2026Gemini 3.1 Flash-Lite
  7. Dec 17, 2025Gemini 3 Flash
  8. Jun 17, 2025Gemini 2.5 Flash-Lite
  9. Apr 17, 2025Gemini 2.5 Flash
  10. Feb 5, 2025Gemini 2.0 Flash-Lite
  11. Dec 19, 2024Gemini 2.0 Flash Thinking Experimental
  12. Dec 11, 2024Gemini 2.0 Flash
  13. Aug 27, 2024Gemini 1.5 Flash-8B
  14. May 14, 2024Gemini 1.5 Flash · this page