# Gemini change log

> What changed in Gemini, by date: every Paralax brief about it, each linking its source where one exists.

- Canonical: https://paralax.ai/engines/gemini
- Latest brief: 2026-09-28
- Change log index: https://paralax.ai/engines

## Dated briefs

### 2026-09-28 — [Gemini Cited No Source in 51.6% of Its Returned Answer Runs](https://paralax.ai/blog/ai-answer-runs-that-cite-nothing-per-engine-2026)

The Machine Relations Index now publishes per-engine run denominators. Perplexity cited a source in 99.97% of returned runs. Gemini cited one in 48.4%.

- Primary source: [ai.google.dev](https://ai.google.dev/gemini-api/docs/google-search)
- Markdown: https://paralax.ai/blog/ai-answer-runs-that-cite-nothing-per-engine-2026.md

### 2026-09-22 — [Gemini Citation Change Log: At Least 452 of the Top 500 Domains, Recorded Six Sources Deep](https://paralax.ai/blog/gemini-citation-change-log-2026)

A dated record of what Gemini cites. Entry one: Gemini reaches at least 452 of the 500 most-cited domains, above ChatGPT on every composition measure.

- Markdown: https://paralax.ai/blog/gemini-citation-change-log-2026.md

### 2026-08-14 — [Gemini 3.7 Flash Makes AI Search a Latency Contest](https://paralax.ai/blog/gemini-37-flash-agentic-ai-search-latency)

Google's new Flash model shows why agentic search favors fast, citable source architecture.

- Primary source: [blog.google](https://blog.google/innovation-and-ai/models-and-research/gemini-models/introducing-gemini-3-7-flash/)
- Markdown: https://paralax.ai/blog/gemini-37-flash-agentic-ai-search-latency.md

### 2026-07-29 — [Gemini Spark Goes Global: What Agentic Search Means for Brand Visibility](https://paralax.ai/blog/gemini-spark-agentic-search-brand-visibility-2026)

Google's always-on Gemini Spark agent is rolling out worldwide. When an agent does the searching, ranking on the SERP stops mattering.

- Primary source: [blog.google](https://blog.google/innovation-and-ai/products/gemini-app/next-evolution-gemini-app/)
- Markdown: https://paralax.ai/blog/gemini-spark-agentic-search-brand-visibility-2026.md

### 2026-07-27 — [Two Answer Engines Swapped Default Models in 72 Hours — Your AI Visibility Baseline Just Expired](https://paralax.ai/blog/default-model-swap-resets-ai-visibility-baseline-2026)

Gemini 3.6 Flash and Claude Opus 5 both became default models in one week. When the model changes, so does what it cites. Here's why.

- Primary source: [blog.google](https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-6-flash-3-5-flash-lite-3-5-flash-cyber/)
- Markdown: https://paralax.ai/blog/default-model-swap-resets-ai-visibility-baseline-2026.md

### 2026-06-23 — [Google's Interactions API Turns Gemini Into an Agent Interface](https://paralax.ai/blog/google-interactions-api-gemini-agent-interface-ai-search-2026)

Google's Interactions API makes Gemini agent workflows a source-architecture problem.

- Primary source: [ai.google.dev](https://ai.google.dev/gemini-api/docs/interactions/interactions-overview)
- Markdown: https://paralax.ai/blog/google-interactions-api-gemini-agent-interface-ai-search-2026.md

## Baseline measurements

Measured citation behavior for this engine, recorded release by release: [Gemini Citation Change Log: At Least 452 of the Top 500 Domains, Recorded Six Sources Deep](https://paralax.ai/blog/gemini-citation-change-log-2026)