Skip to main content
Radar

Five or fewer confirmed AI changes, with original sources, on mornings when something changed.A free source-linked morning brief.

See the free Radar Brief

Gemini 3.8 Flash

Released Sep 2, 2026 see all recent releases

Decision reading
Gemini 3.8 Flash scores 78.4 out of 100 and ranks #6 of 232. This profile shows 18 source-displayable benchmark rows; its strongest eligible category is Coding at #6. API pricing is $0.75 input and $3.75 output per million tokens, with cached input at $0.075.

Data as of September 4, 2026 · How the score is built

Strongest published evidence

Coding ranks #6. Particularly well-suited for software development and code generation tasks.

Validate before choosing

18 published rows leave some tracked benchmark slots empty. Agentic is its lowest eligible category at #11.

Decision snapshot

Each value carries a field reference instead of floating alone. Markers compare this model with the current ranked and priced catalog; they are not absolute quality thresholds.

Capability

78.4/100

field median 58.1

#6 of 232 ranked models

Price

$0.75input / $3.75 output

input median $1

cached $0.075 · blended $2.25

Speed

327tok/s

field median 92 tok/s

First token 10.75 s

Context

1Mtokens

field median 256,000

Maximum output length is tracked separately

Capability shape

Each axis shows percentile within that category’s eligible cohort. The comparison outline is the median of the six nearest public-score peers; a collapsed vertex means the category is not rank-eligible.

Gemini 3.8 Flash category percentile values

  • Agentic93rd percentile
  • Coding97th percentile
  • ReasoningNot eligible
  • Knowledge97th percentile
  • MathNot eligible
  • MultilingualNot eligible
  • Multimodal85th percentile
  • Instruction followingNot eligible

The dashed outline is median of 6 nearest peers.

Eligible category ranks

  1. Agentic#11/151
  2. Coding#6/183
  3. ReasoningNot ranked
  4. Knowledge#6/181
  5. MathNot ranked
  6. MultilingualNot ranked
  7. Multimodal#8/48
  8. Inst. FollowingNot ranked
Top decileTop quartileMid-fieldNot eligible

What it costs to get this score

Published API price against the public score. The x-axis uses a log scale; the dashed path marks models that are not beaten by a cheaper, higher-scoring option. Price uses average of published input and output rates.

Explore all models

The chart opens on the current model. Scroll horizontally to inspect the full price axis.

Current modelGemini 3.8 Flash · 78.4 score · $2.25 blended per million tokens
30405060708090$0.50$1$5$10$25↘ frontierGemini 3.8 Flash

Horizontal: blended price per million tokens, log scale · Vertical: public score

How much of this is verified

Coverage is split by category so a strong number never hides a thin evidence base. Verified means the row is tied to a published source; provisional rows remain visible but separate.

  1. Agentic5/5 verified
  2. Coding5/5 verified
  3. ReasoningNot measured
  4. Knowledge6/6 verified
  5. MathNot measured
  6. MultilingualNot measured
  7. Multimodal2/2 verified
  8. Inst. FollowingNot measured
Verified sourceProvisionalNot measured

Spec sheet

Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.

API model ID
gemini-3.8-flashGoogle Gemini 3.8 Flash API documentation
Maximum output
Not sourced yet
Knowledge cutoff
Not sourced yet
Input modalities
text, image, video, audio, pdfGoogle Gemini 3.8 Flash API documentation
Parameters
Not disclosed by the provider
Availability
Gemini API · Google AI Studio · Android Studio · Stitch · Gemini app · Gemini Enterprise · Google AI Mode · Google Sheets · Google AntigravityGoogle Gemini 3.8 Flash and Gemini 3.8 Flash Cyber launch
Cloud regions
Not tracked yet
API capabilities
Tool calling, structured outputs, and batch support are not tracked yet
Prompt caching
Published at $0.075 per million cached input tokensGoogle Gemini API pricing
Self-host
Weights are not published
Rate limits
Not tracked yet

Category score record

Scores and ranks appear only where published evidence can be displayed. The table keeps the score, weight, cohort, and evidence state together.

Category scores, ranks, weighting, benchmark coverage, and evidence status
CategoryScore
AgenticRank #11 of 151Percentile 93rdWeight 22%5 benchmarksVerified67.6
CodingRank #6 of 183Percentile 97thWeight 20%5 benchmarksVerified68.1
ReasoningWeight 17%0 benchmarksNot measuredNot measured
KnowledgeRank #6 of 181Percentile 97thWeight 12%6 benchmarksVerified76.3
MathWeight 5%0 benchmarksNot measuredNot measured
MultilingualWeight 7%0 benchmarksNot measuredNot measured
MultimodalRank #8 of 48Percentile 85thWeight 12%2 benchmarksVerified82.6
Inst. FollowingWeight 5%0 benchmarksNot measuredNot measured

Benchmark ledger

Coding opens by default. The marker compares each value with the best source-verified result in the catalog; provisional leaders do not set the reference. Expand the remaining categories for every published row.

Coding5 rows
Coding benchmark values, best verified comparison, weight, and source status
LiveCodeBench (Vals)LiveCodeBench, Vals AI runScore89.5%Versus best verified row

Best verified: Claude Fable 5.1 · 90.5%

Gap1 behindWeightWeighted 15%
cursorBench32Score69.2%Versus best verified row

Best verified: Claude Fable 5.1 · 73.4%

Gap4.2 behindWeightWeighted 10%
deepSweScore73.8%Versus best verified row

Best verified: Muse Spark 1.3 · 75.4%

Gap1.6 behindWeightDisplay only
Terminal-Bench 2.1Terminal-Bench 2.1 (provider run)Score89.4%Versus best verified row

Best verified: Gemini 3.8 Flash · 89.4%

GapBest verifiedWeightDisplay only
SWE-bench (Vals)SWE-bench, Vals AI runScore80.0%Versus best verified row

Best verified: Claude Opus 5 · 97.0%

Gap17 behindWeightDisplay only
Agentic5 rows
Agentic benchmark values, best verified comparison, weight, and source status
OSWorld 2.0Score59.0%Versus best verified row

Best verified: GPT-6 Astra · 72.6%

Gap13.6 behindWeightWeighted 10%
Finance Agent v2Score61.4%Versus best verified row

Best verified: Gemini 3.8 Flash · 61.4%

GapBest verifiedWeightDisplay only
Terminal-Bench 2.1Terminal-Bench 2.1 (provider run)Score89.4%Versus best verified row

Best verified: Gemini 3.8 Flash · 89.4%

GapBest verifiedWeightDisplay only
Terminal-Bench 4.0Score19.10%Versus best verified row

Best verified: Claude Mythos 5.1 · 60.90%

Gap41.8 behindWeightDisplay only
Terminal-Bench 2.1 (Vals)Terminal-Bench 2.1, Vals AI runScore81.3%Versus best verified row

Best verified: GPT-6 Astra · 87.3%

Gap6 behindWeightDisplay only
Knowledge6 rows
Knowledge benchmark values, best verified comparison, weight, and source status
MMLU-Pro (Vals)MMLU-Pro, Vals AI runScore90.2%Versus best verified row

Best verified: Claude Fable 5.1 · 92.4%

Gap2.2 behindWeightWeighted 10%
HLE-VerifiedScore54.9%Versus best verified row

Best verified: Gemini 3.8 Flash · 54.9%

GapBest verifiedWeightDisplay only
LABBench2LABBench2: An Improved Benchmark for AI Systems Performing Biology ResearchScore86.2%Versus best verified row

Best verified: Gemini 3.8 Flash · 86.2%

GapBest verifiedWeightDisplay only
BioMysteryBench (human-solvable)BioMysteryBench Human SolvableScore88.8%Versus best verified row

Best verified: Claude Opus 5 · 90.1%

Gap1.3 behindWeightDisplay only
BioMysteryBench (human-difficult)BioMysteryBench Human DifficultScore56.5%Versus best verified row

Best verified: Gemini 3.8 Flash · 56.5%

GapBest verifiedWeightDisplay only
GPQA Diamond (Vals)GPQA Diamond, Vals AI runScore94.4%Versus best verified row

Best verified: Gemini 3.1 Pro · 95.5%

Gap1.1 behindWeightDisplay only
Multimodal2 rows
Multimodal benchmark values, best verified comparison, weight, and source status
CharXiv w/o toolsCharXiv Reasoning without toolsScore86.2%Versus best verified row

Best verified: Claude Mythos 5 · 88.9%

Gap2.7 behindWeightDisplay only
LVBenchScore87.1%Versus best verified row

Best verified: Gemini 3.8 Flash · 87.1%

GapBest verifiedWeightDisplay only

Lineage

The sequence follows explicit supersedes links. A successor's displayed score stays at least 0.1 points above its predecessor; raw benchmark rows do not move. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.

  1. May 19, 2026

    Gemini 3.5 Flash

    Score 70.0 · $1.5 / $9

  2. Jul 21, 2026

    Gemini 3.6 Flash

    Score 70.1 · $1.5 / $7.5

  3. Aug 13, 2026

    Gemini 3.7 Flash

    Score 70.2 · $0.75 / $3.75

  4. Sep 2, 2026 · you are here

    Gemini 3.8 Flash

    Score 78.4 · $0.75 / $3.75

Base entry

How to read this profile

The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.

Gemini 3.8 Flash ranks #6 of 232 on the public leaderboard with a score of 78.41/100. Its source-verified position is #5 of 130.

Gemini 3.8 Flash is a proprietary model with a 1M context window. It uses an explicit reasoning mode, which can improve complex problem solving while adding latency and token use.

Generally available as the stable `gemini-3.8-flash` model through the Gemini API and Google AI Studio. Google also distributes it through Android Studio, Stitch, the Gemini app, Gemini Enterprise, Google AI Mode, Google Sheets, and Google Antigravity.

Gemini 3.8 Flash sits in the Gemini 3.8 Flash family with Gemini 3.8 Flash Cyber. Its explicit predecessor is Gemini 3.7 Flash. 18 of 422 tracked benchmark slots currently have displayable evidence. Missing categories stay blank.

Its strongest eligible category is Coding at #6, while its lowest eligible position is Agentic at #11. particularly well-suited for software development and code generation tasks.

Radar

Gemini 3.8 Flash release history

Full release history

Radar confirmed these at the source. Already tracking Gemini 3.8 Flash? See the free Radar Brief for what changes next.

Frequently asked questions

How does Gemini 3.8 Flash perform overall in AI benchmarks?

Gemini 3.8 Flash ranks #6 out of 232 models on the public BenchAlign leaderboard, with a score of 78.41/100. Its evidence status is Supported, and this profile shows 18 source-displayable benchmark rows. The label describes evidence depth, not a provider quality claim; inspect category rows before choosing a workload.

Is Gemini 3.8 Flash good for knowledge and understanding?

Gemini 3.8 Flash ranks #6 out of 181 eligible models for knowledge and understanding, with a public category score of 76.3/100. That places it in the current top ten for this category. Check the underlying rows before treating the aggregate as a workload guarantee.

Is Gemini 3.8 Flash good for coding and programming?

Gemini 3.8 Flash ranks #6 out of 183 eligible models for coding and programming, with a public category score of 68.1/100. That places it in the current top ten for this category. Check the underlying rows before treating the aggregate as a workload guarantee.

Is Gemini 3.8 Flash good for agentic tool use and computer tasks?

Gemini 3.8 Flash ranks #11 out of 151 eligible models for agentic tool use and computer tasks, with a public category score of 67.6/100. Higher-ranked alternatives are available for workloads where this category decides the choice. Check the underlying rows before treating the aggregate as a workload guarantee.

Is Gemini 3.8 Flash good for multimodal and grounded tasks?

Gemini 3.8 Flash ranks #8 out of 48 eligible models for multimodal and grounded tasks, with a public category score of 82.6/100. That places it in the current top ten for this category. Check the underlying rows before treating the aggregate as a workload guarantee.

Which sibling models are related to Gemini 3.8 Flash?

Gemini 3.8 Flash belongs to the Gemini 3.8 Flash family. Related tracked variants include Gemini 3.8 Flash Cyber. A sibling link indicates shared lineage or a documented configuration relationship; it does not mean the variants have identical pricing, context limits, benchmark evidence, or deployment behavior. Compare before switching.

Does Gemini 3.8 Flash have full benchmark coverage on BenchLM?

No. Gemini 3.8 Flash currently has 36 source-displayable rows across 422 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.

What is the context window size of Gemini 3.8 Flash?

Gemini 3.8 Flash has a documented context window of 1M. That figure is the maximum combined prompt and retained-conversation space reported for this exact model; it is not the maximum output length. The profile keeps output limits separate because providers often publish those limits independently.

Compare Gemini 3.8 Flash with every tracked model410 comparisons

Last updated September 4, 2026. Runtime fields remain blank until a sourced snapshot exists.

Watch Gemini 3.8 Flash in the weekly brief

Get one weekly email when material rank, price, availability, or benchmark evidence changes are worth revisiting.

Read a sample issue

Join 2,000+ readers.