Kingy.ai Price History Library · evidence observed through August 2, 2026
Gemini 2.5 Flash Preview (09-2025) cache-read price history tracks cache read list pricing for gemini-2.5-flash-preview-09-2025. It publishes 2 editorially verified episodes while preserving the broader machine timeline as a separate evidence layer.
Identity and scope
The verified October episodes belong to the exact API ID gemini-2.5-flash-preview-09-2025, released September 25, 2025. Earlier machine states in the broader retained preview-family series are shown for auditability but are not reassigned to that exact model ID.
Editorially verified changes
This preview changed cached-token pricing twice in eight days. That makes a single “preview price” especially unsafe for cost models: a dated capture and exact preview suffix are required.
| Old price last seen | Old | New price first seen | New | Verification |
|---|---|---|---|---|
| October 5, 2025 last old-price capture |
$0.075 | October 9, 2025 first new-price capture |
$0.0375 | 50% cut; change bracket is 3 days. |
| October 16, 2025 last old-price capture |
$0.0375 | October 16, 2025 first new-price capture |
$0.03 | 20% cut; both bounding captures are from the same UTC day. |
Machine-detected state timeline
The rows below come from the scope-safe machine series. A changed value is not automatically an editorial change. Only rows tied to the verified brackets above support the page’s change claim; the others remain observations or held transitions.
| State | First observed | Value | Editorial status | Lineage |
|---|---|---|---|---|
| 1 | $0.0375 USD | machine-only state | archive36f2a4fec493620a… |
|
| 2 | $0.075 USD | machine-only state | archivecc3c4ee0f9fb5199… |
|
| 3 | $0.0375 USD | bounds a verified episode | archive279a1eddeaa045f0… |
|
| 4 | $0.03 USD | bounds a verified episode | archive412b27c42e4353f8… |
Source and archive lineage
- Current official pricing page.
- Episode 1 before: https://web.archive.org/web/20251005160430/https://ai.google.dev/gemini-api/docs/pricing — capture SHA-256
26fb474211bb0f69b2a915bedd65ba6c955c8d7372024a5540f491fb26d1aeff. - Episode 1 after: https://web.archive.org/web/20251009091330/https://ai.google.dev/gemini-api/docs/pricing — capture SHA-256
279a1eddeaa045f021c3795be1c45ae56912fbd547920964041a8c70a745aaf9. - Episode 2 before: https://web.archive.org/web/20251016083234/https://ai.google.dev/gemini-api/docs/pricing — capture SHA-256
089e7c53d74e145150b7c28873faa59feb88252f96c443c6c6e6eee214d73152. - Episode 2 after: https://web.archive.org/web/20251016213634/https://ai.google.dev/gemini-api/docs/pricing — capture SHA-256
412b27c42e4353f8b3194d3f9949f6d6b4472f92a01697a09d598c96aaab4659. - Retained series ID:
google:gemini-2-5-flash-preview:cache_read. - Dataset series window: May 11, 2025 to February 16, 2026.
How to use this history
Use the verified row when reconstructing a dated standard-list-price estimate. Use the machine timeline to audit extraction and locate captures, not to infer billing scope or a precise effective timestamp. Recheck the provider’s current documentation before making a live purchasing or architecture decision.