Gemini 2.5 Flash Preview 09 2025 — Retired model
Gemini 2.5 Flash Preview September 2025 Checkpoint is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with greater accuracy and nuanced context handling. Additionally, Gemini 2.5 Flash is configurable through the "max tokens for reasoning" parameter, as described in the documentation.
Technical specifications
Independent benchmarks
Scores below come from Artificial Analysis, an independent third party. BazaarLink does not participate in the testing.
Top 5 — CodingCoding Index leaderboard
openai/gpt-5-6-sol-xhigh78$5 / $30openai/gpt-5-6-sol-high77$5 / $30anthropic/claude-opus-5-xhigh77$5 / $25Frequently Asked Questions
Can I still use the retired Gemini 2.5 Flash Preview 09 2025 model?
No. Gemini 2.5 Flash Preview 09 2025 has been retired and is retained here only as a historical reference. See the active alternatives linked on this page.
Relay integrity checks
No integrity-check data is available for this model yet.
BazaarLink Probe verifies endpoints that claim to serve this model and flags behavior that differs from the reference baseline.
View the full integrity report →Related models and links
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