Gemini 3.5 Flash vs Google: Gemini 4 Carbon
google/gemini-3.5-flash · google/gemini-4-carbon
As of November 15, 2026, Gemini 3.5 Flash is the cheaper API on UberLLM: $0.0075 per million input tokens and $0.0449 per million output, versus $0.0868 / $0.4341 for Google: Gemini 4 Carbon, about 90% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose Gemini 3.5 Flash to cut cost; choose Google: Gemini 4 Carbon when context size wins. Google: Gemini 4 Carbon carries the larger context window (1,048,576 vs 1,000,000 tokens), which can matter for long-document work.
Gemini 3.5 Flash vs Google: Gemini 4 Carbon, side by side
| Spec | Gemini 3.5 Flash | Google: Gemini 4 Carbon |
|---|---|---|
| Price · input / 1M | $0.0075 | $0.0868 |
| Price · output / 1M | $0.0449 | $0.4341 |
| Context length | 1,000,000 | 1,048,576 |
| Max output tokens | 65,536 | 524,288 |
| Input modalities | text, image | text, image, video, audio, file |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | — | Yes |
| % off list | 99.5% off | 95.7% off |
| First token, median (7 days) | 0.9 s (516 requests) | 13.7 s (849 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 15, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Gemini 3.5 Flash vs Google: Gemini 4 Carbon — FAQ
Is Gemini 3.5 Flash or Google: Gemini 4 Carbon cheaper?
Gemini 3.5 Flash is cheaper on a blended token mix, by about 90%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between Gemini 3.5 Flash and Google: Gemini 4 Carbon?
Gemini 3.5 Flash: $0.0075 in / $0.0449 out per 1M tokens. Google: Gemini 4 Carbon: $0.0868 in / $0.4341 out per 1M tokens. That's roughly a 90% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Gemini 3.5 Flash and Google: Gemini 4 Carbon with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.