Gemini 3.8 Flash: price, context window and ranking
As of 18 October 2026, Gemini 3.8 Flash from Google costs $0.825 per million input tokens and $4.125 per million output tokens on OpenRouter, with a context window of 1.05M tokens. On the LMArena text leaderboard it ranks 8 with a score of 1,498.9. It is number 19 on OpenRouter by usage, with 1.1% of tokens in the past 7 days.
- Input price
- $0.825
- Output price
- $4.125
- Context window
- 1.05M
- LMArena score
- 1,498.9
- Usage share, 7 days
- 1.1%
- Providers
- 7
per 1M tokens
per 1M tokens
tokens
rank 8
rank 19
uptime 97.7%
Specifications
| Field | Value |
|---|---|
| Provider | |
| Input price per 1M tokens | $0.825 |
| Output price per 1M tokens | $4.125 |
| Blended price per 1M tokens (3:1) | $1.65 |
| Context window | 1,048,576 |
| Providers serving it | 7 |
| Average uptime, past day | 97.7% |
| LMArena | 1,498.9 (rank 8) |
| Arena score per dollar | 908.4 |
| Usage share, 7 days | 1.1% (rank 19) |
| Added to OpenRouter | 2026-09-02 |
| Modality | text+image+file+audio+video->text |
| OpenRouter model ID | google/gemini-3.8-flash |
Price history
- Input
- Output
| Date | Input | Output |
|---|---|---|
| 2026-10-16 | $0.825 | $4.125 |
| 2026-10-17 | $0.825 | $4.125 |
| 2026-10-18 | $0.825 | $4.125 |
Usage rank history
- Usage rank
| Date | Usage rank |
|---|---|
| 2026-10-16 | 19 |
| 2026-10-17 | 19 |
| 2026-10-18 | 19 |
Compare with other models
Frequently asked questions
How much does Gemini 3.8 Flash cost per million tokens?
Gemini 3.8 Flash costs $0.825 per million input tokens and $4.125 per million output tokens on OpenRouter, as of 18 October 2026. At a mix of three parts input to one part output the blended price is $1.65 per million tokens.
What is the context window of Gemini 3.8 Flash?
Gemini 3.8 Flash has a context window of 1.05M tokens (1,048,576 exactly).
How does Gemini 3.8 Flash rank on LMArena?
Gemini 3.8 Flash is ranked 8 on the LMArena text leaderboard with a score of 1,498.9 from 37,454 votes. The listing used is "Gemini 3.8 Flash (High)".
When was Gemini 3.8 Flash released?
OpenRouter lists Gemini 3.8 Flash as added on 2 September 2026.
Who provides Gemini 3.8 Flash?
Gemini 3.8 Flash is served by 7 providers on OpenRouter, with average uptime of 97.7% over the past day.
Methodology and sources
The catalogue, prices, context lengths and provider counts come from OpenRouter's public Models API. They are fetched every day at 06:00 Istanbul time and stored as a daily snapshot. Weekly changes are calculated by Oesnada by comparing those snapshots; there is no data before 16 October 2026.
Usage shares are calculated from the daily token totals of OpenRouter's Data API: a model's tokens over the past 7 days divided by all tokens in the same period, including the aggregated long tail outside the top 50. Token counts come from each provider's own tokenizer and are not directly comparable across providers. The data is published by OpenRouter under CC BY 4.0. Variants such as ":free" are counted separately, so shares here can differ from OpenRouter's own ranking page.
Quality rankings come from LMArena's text (overall) leaderboard. A model is matched only when its name matches exactly; if a model has several listings, the highest-scoring one is used. "Frontier" means a model in the LMArena top 15.
"Best value" divides the LMArena score by the blended price (three parts input to one part output). Arena scores are not a linear scale, so the ratio is a rough guide. This page is produced automatically.
- OpenRouter Models API
- OpenRouter Rankings (Data API) (CC BY 4.0)
- LMArena leaderboard dataset (CC BY 4.0)
Related Oesnada stories: Google
- Websites Are Blocking AI Agents From Their Doors
The blocks challenge a central promise of the agent pitch: that software can act on a person's behalf across the open web.
Importance 90/100 - Anthropic Report Finds AI Cutting Entry-Level Tech Hiring While Boosting
The report matters because Anthropic presents itself as an early indicator of how AI could change hiring and productivity elsewhere.
Importance 93/100 - Meta Releases Muse Spark Open as Most Capable US Open-Weight Model
The system features 816 billion total parameters, with 42 billion active during any given task, alongside a 1-million-token context window that lets it process vast amounts of text and data simultaneously.
Importance 94/100 - Medicare Agency Slack Lets Tech Giants Shape AI Medical Records Policy
According to an investigation by KFF Health News, which examined thousands of internal messages, meeting transcripts, and recordings, the Centers for Medicare & Medicaid Services (CMS) used the closed forum to grant industry leaders direct access to top regulators.
Importance 95/100
All AI models
Download the data
Cite this page
Oesnada, "Gemini 3.8 Flash: price, context window and ranking", https://oesnada.com/ai-models/google-gemini-3-8-flash, accessed 18 October 2026.