Chat with Gemini 3.8 Flash for free
Gemini 3.8 Flash is Google's fast multimodal model: text, image, audio and video in, tunable thinking, and strong agentic tool use. Start typing, no sign-up needed.
See how Gemini 3.8 Flash thinks
Pick a task and watch a sample answer stream in. Open the same prompt in Chatday when you’re ready.
The bug is in the arrow body: u.id = id assigns instead of compares, so the callback returns the assigned value and .find never matches the way you expect.
Fix it with a strict comparison:
Use === to compare. A single = is assignment, which is why you saw undefined.
What makes Gemini 3.8 Flash stand out
Gemini 3.8 Flash specifications
| Provider | |
| Model family | Gemini 3 series |
| Context window | 1,000,000 tokens |
| Max output | 65,536 tokens |
| Modality | Text · Vision · Audio · Video · Code |
| Input price | $0.75 / 1M tokens |
| Output price | $3.75 / 1M tokens |
| Tool / function calling | Yes |
| Vision | Yes |
| Streaming | Yes |
| Available in Chatday | Free & Pro |
Pricing shown for reference; usage is included in your Chatday plan.
Gemini 3.8 Flash vs other top models
| Model | Context | Best at | Input price | In Chatday |
|---|---|---|---|---|
| Gemini 3.8 Flash | 1M | Fast multimodal | $0.75/M | Free |
| Grok 4.6 | 500K | Agentic reasoning | $2/M | Free |
| Claude Opus 5 | 1M | Frontier agents | $5/M | Free |
| GPT-5.6 | 1.1M | Flagship reasoning | $2/M | Free |
Gemini 3.8 Flash questions
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Claude Opus 5
Claude Opus 5 is Anthropic's strongest Opus model: hybrid reasoning for long-running agents, serious coding and computer use.
GPT-5.6
GPT-5.6 is OpenAI's newest flagship for hard, multi-step reasoning, coding and tool use, the default when problems get genuinely difficult.
Chat with Gemini 3.8 Flash and switch models any time.
One subscription, every leading model. Start free in the Chatday web app.