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Gemini 3.8 Flash benchmarks, pricing and specs

Gemini 3.8 Flash is a Google model released on September 2, 2026 that takes text, image, audio and video input and produces text. It costs $0.75 per 1M input tokens and $3.75 per 1M output tokens and accepts up to 1,048,576 tokens of context. It scores 1497 Elo on Arena Text, #4 of 39 current models (Arena, measured October 8, 2026).

Per 1M input tokens
$0.75
Per 1M output tokens
$3.75
Context window
1.05M
Arena Text
1497 Elo · #4/39

Data verified October 12, 2026 · Dataset 2026-10-12

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Key facts

Provider
Google
Model family
Gemini 3.8
Release date
September 2, 2026
Status
Current
Access
API only
API model id
Not reported
Context window
1,048,576 tokens
Max output
65,536 tokens
Input
text, image, audio, video
Output
text
Task families
text, multimodal
Declared capabilities
reasoning

Gemini 3.8 Flash pricing

It is the #10 cheapest of 37 current text models priced per 1M input tokens.

UnitPrice (USD)TierAppliesSource
1M input tokens$0.75standardUntil December 31, 2026
1M input tokens$1.50standardFrom January 1, 2027
1M output tokens$3.75standardUntil December 31, 2026
1M output tokens$7.50standardFrom January 1, 2027
1M input tokens$0.075cachedCurrent
1M input tokens$0.375batchCurrent
1M output tokens$1.875batchCurrent
1M input tokens$1.35priorityCurrent
1M output tokens$6.75priorityCurrent

Independent benchmark results

Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. Google's own launch figures are listed under strengths with the publisher named, because they are not measured the same way.

BenchmarkScoreRankMeasuredSource
Arena Text1497 Elo#4 of 39October 8, 2026Arena · 2026-10-12
GPQA Diamond95.4%#3 of 37October 12, 2026Epoch AI · 2026-10-12
FrontierMath Tiers 1-3 (v2)68.4%#21 of 37October 12, 2026Epoch AI · 2026-10-12
SimpleQA Verified69.7%#7 of 34October 12, 2026Epoch AI · 2026-10-12

Strengths, cautions and best uses

Strengths

  • The cheapest frontier-tier option in this dataset by a wide margin: $0.75 per million input and $3.75 per million output, roughly one thirteenth of GPT-6 Astra on both
  • Accepts text, image, audio, video and PDF input with a 1,048,576-token context window and 65,536-token maximum output
  • Google reports it ahead of Gemini 3.7 Flash on every published benchmark, including DeepSWE v1.1 73.7% vs 65.3% and Terminal-bench 2.1 89.4% vs 85.8%

Cautions

  • The listed price is promotional and ends 31 December 2026; on 1 January 2027 input and output both double, to $1.50 and $7.50, and cached input goes from $0.075 to $0.15
  • Output pricing is billed inclusive of thinking tokens, so reasoning-heavy prompts cost more than the output length suggests
  • Google’s published comparisons are against its own previous Flash release and were not independently reproduced here

Best for

  • High-volume agentic and coding workloads where per-token cost dominates the decision
  • Multimodal pipelines that need audio, video and PDF input in one model

Alternatives to Gemini 3.8 Flash

The closest current textmodels by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.

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Gemini 3.8 Flash FAQ

How much does Gemini 3.8 Flash cost?

Gemini 3.8 Flash costs $0.75 per 1M input tokens and $3.75 per 1M output tokens at the standard tier. It is the #10 cheapest of 37 current text models priced per 1M input tokens. Source: Google, verified October 11, 2026.

What is the context window of Gemini 3.8 Flash?

Gemini 3.8 Flash accepts up to 1,048,576 tokens of context. It can return up to 65,536 tokens in one response. That ranks #10 of 44 current text models by context length.

How does Gemini 3.8 Flash score on independent benchmarks?

Gemini 3.8 Flash scores 1497 Elo on Arena Text, #4 of 39 current models (Arena, measured October 8, 2026), 95.4% on GPQA Diamond, #3 of 37 current models (Epoch AI, measured October 12, 2026) and 68.4% on FrontierMath Tiers 1-3 (v2), #21 of 37 current models (Epoch AI, measured October 12, 2026). These are independent evaluations, not Google's own launch figures.

Is Gemini 3.8 Flash open source or API only?

Gemini 3.8 Flash is available through Google's API only; its weights are not published.

What are the best alternatives to Gemini 3.8 Flash?

The closest current alternatives by price and measured performance are DeepSeek-V4.1-Flash (60% cheaper per 1M input tokens, $0.30 vs $0.75), Gemini 3.7 Flash (same price per 1M input tokens, $0.75), Gemini 3 Flash Preview (33% cheaper per 1M input tokens, $0.50 vs $0.75) and Grok 4.20 (67% more per 1M input tokens, $1.25 vs $0.75).

Sources

Cite this page

Van Data Team. "Gemini 3.8 Flash Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-10-12. https://vandatateam.com/ai-model-benchmarks/gemini-3-8-flash

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