---
title: "Google: Gemini 3.8 Flash — price, capability and what beats it · Undominated.ai"
canonical: https://undominated.ai/models/google__gemini-3.8-flash/
description: "Google: Gemini 3.8 Flash: $0.750/M in, $3.75/M out. Independent capability scores, and the models that are both better and cheaper."
---

# Google: Gemini 3.8 Flash — price, capability and what beats it · Undominated.ai

> Google: Gemini 3.8 Flash: $0.750/M in, $3.75/M out. Independent capability scores, and the models that are both better and cheaper.

MODEL PROOF

# Gemini 3.8 Flash

Google · 02 Sept 2026

 Balanced Summarise Chat Code gen Agentic

FRONTIER

## Nothing is both better and cheaper under this workload.

 **$1.50** / 1M tokens Balanced · 3 tokens in per 1 out

 Independent LMArena score 1,494.7 ± 8.53 · 5,076 votes
 Context window 1.05M
 Maximum output 65.54K
 Input modalities text, image, video, file, audio
 Output modalities text
 Published input price $0.750 / 1M tokens
 Published output price $3.75 / 1M tokens
 Pricing kind fixed

Evidence as of 19 Sept 2026

 openrouter/models LMArena · cc-by-4.0 Copy link Share Download landscape card

MODEL MONUMENT

## Save or share this proof

Google: Gemini 3.8 Flash. Balanced workload. Frontier. Evidence as of 19 Sept 2026.

 Download landscape card — 1200 by 630 pixels Download square card — 1080 by 1080 pixels Copy landscape image Share landscape card

$0.750/M in, $3.75/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription. Nothing is both better and cheaper than Gemini 3.8 Flash.

### Every price dimension

| Input | $0.750 /M |
| --- | --- |
| Output | $3.75 /M |
| Cached input | $0.075 /M |
| Cache write | $0.042 /M |
| Reasoning | $3.75 /M |
| Web search | $0.014 /call |

**Reasoning tokens are billed separately** at $3.75/M, on top of output. On a reasoning-heavy workload this can be 40% of the bill and it does not appear in the advertised price.

### Who sells it

The same weights, different shops. Cheapest is not like-for-like when serving precision differs.

| Seller | Input | Output | Precision | Uptime (1d) |
| --- | --- | --- | --- | --- |
| Seller Google AI Studio | Input $0.375 | Output $1.88 | Precision undeclared | Uptime (1d) 99.90% |
| Seller Google | Input $0.375 | Output $1.88 | Precision undeclared | Uptime (1d) 77.97% |
| Seller Google AI Studio | Input $0.750 | Output $3.75 | Precision undeclared | Uptime (1d) 99.93% |
| Seller Google | Input $0.750 | Output $3.75 | Precision undeclared | Uptime (1d) 98.79% |
| Seller Google AI Studio | Input $1.35 | Output $6.75 | Precision undeclared | Uptime (1d) 99.63% |
| Seller Google | Input $1.35 | Output $6.75 | Precision undeclared | Uptime (1d) 99.63% |

### Independent scores

| LMArena Elo | 1494.7 high |
| --- | --- |

LMArena Elo under CC BY 4.0. Absence of another board is not a score of zero.

#### Best rankings by task

 - mobileapps #6 of 40 1259
- uicomponent #7 of 104 1340
- website #8 of 114 1315
- codecategories #8 of 108 1324
- gamedev #9 of 107 1339
- webapps #10 of 39 1256
- 3d #12 of 100 1323
- fullstack #12 of 41 1250

### Capability

| Context window | 1.0M |
| --- | --- |
| Max output | 66K |
| Input modes | text, image, video, file, audio |
| Tool use | yes |
| Reasoning | always on |

### Provenance

| Price source | openrouter.ai |
| --- | --- |
| Fetched | 2026-09-19 |
| Quality data | verified |

Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.

## Questions this page answers

### What does Gemini 3.8 Flash cost?

$0.750/M in, $3.75/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.

### Does Gemini 3.8 Flash have an independent quality score?

Gemini 3.8 Flash has an LMArena score in this catalogue.

### What beats Gemini 3.8 Flash?

Nothing is both better and cheaper than Gemini 3.8 Flash.

### Does this page use Artificial Analysis scores for Gemini 3.8 Flash?

No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.

[Check whether this is still the one to buy](/check/google__gemini-3.8-flash/)

## Related

 - Side by side [Claude Opus 5](/compare/anthropic__claude-opus-5--vs--google__gemini-3.8-flash/)
- Nearby on the capability axis [Claude Opus 4.6](/models/anthropic__claude-opus-4.6/)
- Same vendor [Gemini 3.1 Pro Preview](/models/google__gemini-3.1-pro-preview/)
- Google models [Google](/providers/google/)
- Where this model appears [frontier](/frontier/)
- Side by side [GLM 5.3](/compare/google__gemini-3.8-flash--vs--z-ai__glm-5.3/)
- Nearby on the capability axis [Claude Fable 5](/models/anthropic__claude-fable-5/)
- Same vendor [Gemini 3.6 Flash](/models/google__gemini-3.6-flash/)
- Where this model appears [knee](/knee/)
- Nearby on the capability axis [Gemini 3.7 Flash](/models/google__gemini-3.7-flash/)
- Same vendor [Gemini 3.5 Flash](/models/google__gemini-3.5-flash/)
- Where this model appears [wire](/wire/)

## Badge

The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.

 Markdown Copy
 [![Gemini 3.8 Flash — Undominated.ai dominance verdict](https://undominated.ai/badge/google__gemini-3.8-flash.svg)](https://undominated.ai/models/google__gemini-3.8-flash/)
 HTML Copy
 <a href="https://undominated.ai/models/google__gemini-3.8-flash/"><img src="https://undominated.ai/badge/google__gemini-3.8-flash.svg" alt="Gemini 3.8 Flash — Undominated.ai dominance verdict" height="36"></a>

Direct file: [https://undominated.ai/badge/google__gemini-3.8-flash.svg](https://undominated.ai/badge/google__gemini-3.8-flash.svg) — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never older than the last deploy.