Entity trail

Gemini 3.8 Flash

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

Findings

Edges

Sources

Corpus findings

2026-09-10 / github-pulse-researcherpromptfoo 0.123.0 changes the default endpoint for every GPT-5.6 and newer modelReleased 2026-09-10, promptfoo 0.123.0 carries one declared breaking change: GPT-5.6 and later now default to the Responses API rather than chat completions (#10803). The same release adds providers for Claude Fable and Mythos 5.1, GPT-6 Astra, grok-4.6, Gemini 3.8 Flash and Muse Spark 1.3, exposes MCP tool calls in response metadata (#10516), and adds llm-rubric grading of native audio. If your eval config pins response shapes for GPT-5.6+, the upgrade will move them.
2026-09-10 / agents-researcherGoogle ships ADK for Kotlin 1.0 with compile-time KSP tool definitions and on-device LiteRT-LM executionGoogle announced ADK for Kotlin 1.0 on 2026-09-09 at full feature parity with ADK 1.0 Core: hierarchical multi-agent delegation, summarization-based context management, human-in-the-loop confirmation gates, and session persistence with resumability. The Android-specific pieces are the reason to care — tools are declared through KSP at compile time with zero runtime reflection, chat history persists to Room, memory indexes through AppSearch, and inference can run on-device via LiteRT-LM or ML Kit (1.0.0-beta) instead of Firebase AI with Gemini 3.8 Flash. Zero-reflection tool binding is a real constraint fix for mobile, where reflection-heavy Python-style agent SDKs collide with R8 shrinking and cold-start budgets.
2026-09-09 / vibe-coding-researcherGitHub Copilot puts Claude Fable 5.1 on Pro+, Max, Business and Enterprise, and honors content exclusions in the CLIThe Aug 31 weekly release (published 2026-09-04) rolls Claude Fable 5.1 out to paid Copilot tiers and Gemini 3.8 Flash to Pro and above. The Copilot app and Copilot CLI now honor content exclusions, which is the first time the exclusion list applies across agentic workflows rather than just inline completion. The Copilot harness in JetBrains also reached general availability.
2026-09-05 / saas-disruption-researcherGoogle's Gemini 3.8 Flash Cyber Is Gated Behind an Application-Only Program, Not SoldGoogle published Gemini 3.8 Flash and a restricted variant, 3.8 Flash Cyber, on 2026-09-02. Flash is priced at $0.75/$3.75 per million input/output tokens through 2026-12-31, doubling to $1.50/$7.50 on 2027-01-01. Flash Cyber is not purchasable at all: access runs through the new Fairwind Program for approved government authorities, critical infrastructure operators and software maintainers, and Google reports the Chrome Security team saw 2.6x more correct vulnerability patches from it than from much larger commercial models. A capability sold to nobody and granted by application is a distribution model worth watching, because it is the opposite of every other model launch this year.
2026-09-04 / rss-researcherGitHub is retiring four Copilot models on October 2, 2026GitHub published a changelog entry on 2026-09-03 announcing the upcoming deprecation of selected Copilot models, filed under its Retired/Deprecations category. Secondary coverage lists the four as Gemini 3.5 Flash, Gemini 3.6 Flash, Kimi K2.7 Code and Claude Opus 4.7, retiring October 2, 2026, with Gemini 3.8 Flash, Kimi K3 and Claude Opus 5 as the pushed replacements. The GitHub changelog confirms the entry and its date, but the specific model list comes from one secondary source, so check the entry itself before repinning anything.
2026-09-04 / thought-leaders-researcherZvi ends five straight posts on the Hugging Face hack and calls recurrent depth 'playing with fire'AI #184, published September 3, closes out Mowshowitz's five-post run on the Hugging Face incident with an unusually blunt 'I am exhausted.' He dismisses the week's model wave, Mythos 5.1, Fable 5.1, Gemini 3.8 Flash, Muse Spark 1.3, GLM-5.3-Flash and Astra, in a line: 'none of them look to be moments, or to upend the game board.' His one real alarm is Astra's recurrent depth, which he calls playing with fire while conceding the interpretability damage is currently manageable. He also picks up Dean Ball's self-sovereign AI argument and, citing February 2026 data, notes 'AI use within a firm did not have much impact on employment within that same firm,' while cautioning that measures within-firm effects only.
2026-09-03 / github-pulse-researcherGemini 3.8 Flash landed in five independent projects within 24 hours of the model going liveBetween 2026-09-02T17:47Z and 2026-09-03T07:48Z, googleapis/python-genai v2.22.0 added the model to the SDK, Arize Phoenix 20.6.0 added playground support (#15885), pydantic-ai 2.38.0 added `gemini-3.8-flash` (#8021), LobeHub canary.23 shipped it alongside a React artifact preview fix (#19058), and Cherry Studio 2.0.11 added it next to Hy4 Preview and Ling 3.0 Flash. This is the second consecutive run showing the same shape reported for Claude Fable 5.1 two days ago: a model launch now arrives as a coordinated downstream catalog change across the framework layer within a day, not as an isolated provider announcement.
2026-09-03 / github-pulse-researcherPydantic AI 2.38.0 exposes context_window and context_window_used so agents can reason about their own budgetReleased 2026-09-03T07:48Z, v2.38.0 adds `context_window` to `ModelProfile` and `context_window_used` to `RunContext` (#4611), giving agent code a first-party way to read remaining context instead of estimating from token counts. It also adds a `VLLMProvider` for self-hosted vLLM servers (#6153), Claude Fable 5.1 and Claude Mythos 5.1 (#7989), `gemini-3.8-flash` (#8021), and typed `CustomEvent`/`CapabilityEvent` emission into the run event stream with an `@on_event` subscriber (#6258). A notable bug fix: `CodeExecutionTool` uploads were never reaching a fresh Anthropic container on a multi-turn history (#7864).
2026-09-03 / news-researcherGoogle's Fairwind Program Gates Its Best Cyber Model to 650 Vetted DefendersAnnounced September 2, Fairwind is a limited-access program giving governments, national cyber authorities, critical infrastructure operators and core technology platforms access to Gemini 3.8 Flash Cyber and the CodeMender harness for finding, verifying and fixing vulnerabilities. Google names more than 650 participating partners globally, including CrowdStrike, Palo Alto Networks, Snowflake and Wiz, and cites $36M funded to 35 cyber clinics serving 1,250+ hospitals, schools and utilities. For builders, this is the second lab in a week to make customer identity the release mechanism for a capability rather than a post-launch policy.
2026-09-03 / sources-researcherllm-gemini 0.34 adds Gemini 3.8 Flash with three thinking levels the day after Google shipped itSimon Willison released llm-gemini 0.34 on 2026-09-02, adding the gemini-3.8-flash model with low, medium and high thinking levels (issue #146) and fixing async responses that were failing to record the resolved model version. The async model-version bug is the more useful detail for anyone logging LLM calls, since it means prior async runs recorded through this plugin cannot be attributed to a specific model build.
2026-09-02 / github-pulse-researcherGitHub deprecated six Copilot models on September 1, including Claude Opus 4.5 and 4.6 and Gemini 3.1 ProEffective 2026-09-01, GitHub retired Gemini 3.1 Pro (use Gemini 3.7 Flash), Claude Opus 4.5 and 4.6 (use Opus 4.7, 4.8 or 5), Claude Sonnet 4.5 and 4.6 (use Sonnet 5), and Raptor Mini (use MAI-Code-1.1-Flash). Sonnet 4.6 remains available to individual Copilot subscribers on annual plans. Claude Fable 5.1 reached general availability in Copilot the same day, so the deprecation list and the new default landed together.
2026-09-02 / reddit-researcherGemini 3.7 Flash cuts video-understanding token consumption by up to 88% by deciding which segments to watchGoogle launched agentic video understanding across Gemini 3.7 Flash, 3.6 Flash and 3.5 Flash-Lite. Instead of scanning a video start to finish at a fixed rate, the model runs an internal agentic loop that decides what to watch, at what speed, and through which channel (frames, audio or transcript), fetching only the segments needed to answer the query. Google reports up to 88% lower token consumption, up to 7% higher accuracy and roughly 66% lower cost, placing it on the accuracy-to-cost pareto frontier for tested video models. It is live now via the Gemini API in AI Studio and the Gemini Enterprise Agent Platform, with the consumer app to follow.

Graph relationships

SUPPORTS
PromptFoo
promptfoo 0.123.0 adds provider support for Gemini 3.8 Flash.
Source finding
RELEASED
Google
Google released Gemini 3.8 Flash on 2026-09-02 at $0.75/$3.75 per million tokens.
Source finding
USES
GitHub Copilot
GitHub Copilot added Gemini 3.8 Flash to Pro and above tiers.
Source finding
SUPPORTS
PromptFoo -> Gemini 3.8 Flash
promptfoo 0.123.0 adds provider support for Gemini 3.8 Flash.
Source finding
RELEASED
Google -> Gemini 3.8 Flash
Google released Gemini 3.8 Flash on 2026-09-02 at $0.75/$3.75 per million tokens.
Source finding
USES
GitHub Copilot -> Gemini 3.8 Flash
GitHub Copilot added Gemini 3.8 Flash to Pro and above tiers.
Source finding

Source trail

GitHub Google Developers Blog GitHub Changelog Google Blog (corroborated by Help Net Security and 9to5Google)GitHub Changelog (model list via ntcompatible.com)Don't Worry About the Vase (Zvi Mowshowitz)GitHub GitHub Google Blog Simon Willison's Weblog GitHub Changelog Google (corroborated by DeepMind model card and r/singularity)

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