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Gemini 3.8 Flash

Google · Gemini Flash series · released 2 Sep 2026 · as of 13 Nov, 20:12 UTC

51
02550751000 = all negative · 50 = neutral · 100 = all positive

No clear lean

Reddit has no clear lean on Gemini 3.8 Flash: an index of 51 from 171 opinions in 117 threads last 7 days; its 95% interval, 46–57, crosses neutral 50. That is 16th of the 25 models with a full read. 3 points warmer than the previous 7 days, within noise. One account wrote 16 of these 171 opinions (9%).

On benchmarks: 7th of 128 on Arena text, 7th of 69 on the coding index.

Per day

The last 14 UTC days. Each day's own index at its value, with its 95% interval.

  1. Sat 31 Oct28
  2. Sun 1 Nov16
  3. Mon 2 Nov17
  4. Tue 3 Nov11
  5. Wed 4 Nov15
  6. Thu 5 Nov11
  7. Fri 6 Nov22
  8. Sat 7 Nov21
  9. Sun 8 Nov33
  10. Mon 9 Nov18
  11. Tue 10 Nov20
  12. Wed 11 Nov26
  13. Thu 12 Nov25
  14. Fri 13 Nov28 so far

No day this week is set against the rest of the week: both need a full read (30 opinions from 20 threads and 20 accounts).

Is Gemini 3.8 Flash getting worse?

This measures opinion, not capability: whether Reddit's view of Gemini 3.8 Flash moved, not whether the model changed. Reddit's view has not moved by more than noise: 51 in the last 7 days against 48 in the 7 before, a gap of 3.5 points inside its 95% margin of ±8.5; a smaller shift can't be ruled out.

Praised and criticised

Share of the opinions on each topic that praise it. Tagged by a language model; topics never feed the index.

  1. Writing & tonesplit42
  2. Codingsplit25
  3. Costsplit25
  4. Intelligencesplit24
  5. Speedsplit22
  6. Follow-throughsplit18

Reddit and the benchmarks

Its rank on each list, bottom to top. Outside numbers sit beside Reddit and never feed its index. Hover a name for the value and its source.

  1. #16 of 25 with a full read
  2. #7 of 128 on Arena
  3. #32 of 94 on Arena
  4. #39 of 107 at Artificial Analysis
  5. #7 of 69 at Artificial Analysis
  6. #19 of 56 at Artificial Analysis
  7. #19 of 96 at Epoch

$0.825 in / $4.125 out per million tokens · 1.05M context · reasoning mode · OpenRouter, 13 Nov

Per subreddit

The model's index within each subreddit, from 10 opinions; faded below 30 opinions, 20 threads or 20 accounts.

  1. r/GeminiAI81
  2. r/SillyTavernAI52

Threads behind the opinions

The 20 threads with the most opinions about this model. A thread's index reads the opinions in it, not the post, and shows from 10 opinions.

ThreadSubredditOpinionsIndex
I recall what i said about Gemini 3.8 Flash. I was wrong. It feels the same as Argon.r/SillyTavernAI2161
DeepSeek V4.1 flash (1017) VS Gemini 3.1 pro and 3.8 flashin 5 commentsr/DeepSeek5–
Gemini 4 Hydrogen is officially out — 2.5x faster than 3.8 Flash and beats Argon on intelligence while costing lessr/GeminiAI4–
Gemini Hydrogen is Weirdin 4 commentsr/SillyTavernAI4–
Claude released Fable 5.2. Destroys Gemini 4 Carbon in almost every benchmarkin 4 commentsr/GeminiAI4–
Gemini 3.8 Flash training cutoff is still stuck in early 2025... Google is heavily masking outdated base weights with Search groundingin 4 commentsr/GeminiAI4–
Why most people don't like Gemini 4 Argon?in 4 commentsr/GeminiAI4–
Gemini 4 Hydrogen is here on OR boys!in 3 commentsr/SillyTavernAI3–
Google fooled all of you!!r/GeminiAI3–
when Gemini 4 Hydrogen-High is already so smart and fast, whats the point in using 3.1pro?in 2 commentsr/GeminiAI2–
Google might actually have cooked with Hydrogenin 2 commentsr/GeminiAI2–
Gemini Reminder: 3.8 Flash pricing will double in January to match 4 Hydrogen pricingin 2 commentsr/SillyTavernAI2–
Where is our unsung hero? Any news on the next Gemini Flash?in 2 commentsr/GeminiAI2–
The gap between Gemini Flash and Carbon is absurd compared to Anthropic and OpenAI tiersin 2 commentsr/GeminiAI2–
Can I use Sonnet 5.5 to orchestrate Gemini 3.8 Flash High Effort?r/ClaudeAI2–
Can I use Sonnet 5.5 to orchestrate Gemini 3.8 Flash High Effort?r/GeminiAI2–
Gemini 4 Carbon is out on Open routerin 2 commentsr/SillyTavernAI2–
Sloppiest models for writing?in 2 commentsr/SillyTavernAI2–
(SFW) Gemini Flash 3.8 and Argon, small findings, small presetr/SillyTavernAI2–
Gemini 3.8 Flash (Low vs Med vs High)r/GeminiAI2–

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