Gemini 3.8 Flash
Announced Sep 2, 2026
Stronger reasoning in the Flash tier
What could it do?
Google reported improvements in software engineering and complex agent workflows.
What changed?
Maintained the introductory cost and speed positioning of 3.7 Flash.
Brought more demanding workflows to a widely available model.
Where it fell short
The separate Flash Cyber variant had restricted access.
Release facts were checked against the sources below. Performance claims belong to the developers; we have not independently tested these models.
Developer announcement or release logBenchmark results
A benchmark estimate, not a percentage or capability multiplier. Reasoning settings are not specified in this source table. Historical estimates can change in later snapshots.
Epoch AI methodology ↗Download the source snapshotChecked Oct 7, 2026 · CC BY 4.0Selected highest effort variant where available in the current table. Starred partial results are excluded. Claude fallback configurations can use other models when safeguards intervene.
Source: Artificial Analysis Intelligence Index ↗Download selected resultsChecked Oct 8, 2026One explicitly named variant per release. Scores come from the same Overall snapshot; preliminary entries and reported intervals are preserved. These are current ratings of earlier variants, not their launch day ratings.
Source: Text Arena ↗Download selected resultsChecked Oct 8, 2026