Gemini 3.8 Flash vs Gemini 3.7 Flash
Gemini 3.8 Flash and Gemini 3.7 Flash come to the same total on Router One for a 1M-input + 1M-output mix ($1.35), with matching input and output rates. Their cached-input rates differ: Gemini 3.8 Flash $0.0225 vs Gemini 3.7 Flash $0.225 per 1M tokens. Both carry a 1.05M context window. Both answer on /v1/chat/completions.
Gemini 3.8 Flash and Gemini 3.7 Flash compared on current per-token rates, context window, and capabilities — both callable through one OpenAI-compatible endpoint that logs each request it forwards.
Gemini 3.8 Flash vs Gemini 3.7 Flash: rates, context window, and capabilities
| Spec | Gemini 3.8 Flash | Gemini 3.7 Flash |
|---|---|---|
| Input / 1M tokens | $0.225 | $0.225 |
| Output / 1M tokens | $1.125 | $1.125 |
| Cached input / 1M tokens | $0.0225 | $0.225 |
| Context window | 1.05M | 1.05M |
| Capabilities | Chat, Streaming, Tool calling, Vision | Chat, Streaming, Tool calling, Vision |
| Subscription plans | Standard models — Pro, Max, Ultra | Standard models — Pro, Max, Ultra |
| Detail page | Gemini 3.8 Flash | Gemini 3.7 Flash |
What does 1M tokens cost on Gemini 3.8 Flash vs Gemini 3.7 Flash?
For a workload of 1M input plus 1M output tokens at current rates, Gemini 3.8 Flash and Gemini 3.7 Flash both come to $1.35, but their cached-input rates differ (see the table above), so the gap grows with the share of cached input in your requests. Context window and listed capabilities match, so compare them on your own prompts in your request traces.
Switch between Gemini 3.8 Flash and Gemini 3.7 Flash
The API key, base URL, endpoint and request shape stay the same — Router One serves both on /v1/chat/completions, so switching is a model-string change. Per Google's docs (checked 2026-11-05), on Google's own Gemini API the two models have the same token limits and the same thinking levels (low, medium and high, with medium as the default; minimal returns an error there). Check the vendor status as well: per Google's Gemini API release notes (October 8, 2026; checked 2026-11-05), Google has deprecated gemini-3.7-flash on the Gemini API, names gemini-3.8-flash as its replacement and routes requests for gemini-3.7-flash to gemini-3.8-flash, so start new work on google/gemini-3.8-flash. Per Google's Gemini 3.8 Flash guide (checked 2026-11-05), Gemini 3.8 Flash can use more tokens on long-running, complex tasks by design, so run your own prompts on both before you move an existing workload.
curl https://api.router.one/v1/chat/completions \
-H "Authorization: Bearer sk-your-router-one-key" \
-H "Content-Type: application/json" \
-d '{"model": "google/gemini-3.8-flash", "messages": [{"role": "user", "content": "Hello"}]}'
# Same request, other model — change one string:
# "model": "google/gemini-3.7-flash"FAQ
Is Gemini 3.8 Flash cheaper than Gemini 3.7 Flash?
Input: Gemini 3.8 Flash $0.225 vs Gemini 3.7 Flash $0.225 / 1M tokens; the rates are equal. Output: Gemini 3.8 Flash $1.125 vs Gemini 3.7 Flash $1.125 / 1M tokens; the rates are equal. Cached input: Gemini 3.8 Flash $0.0225 vs Gemini 3.7 Flash $0.225 / 1M tokens; Gemini 3.8 Flash has the lower rate. Total cost depends on the workload's input, output and cache usage. Rates change; the /models page is the live source of truth.
Is Gemini 3.8 Flash or Gemini 3.7 Flash included in a Router One subscription?
Gemini 3.8 Flash and Gemini 3.7 Flash both count against the Standard models allowance on Pro, Max and Ultra: Pro 5,000, Max 8,000 and Ultra 25,000 requests per 30-day cycle, one pool shared by every model in that tier. Requests to Gemini 3.8 Flash or Gemini 3.7 Flash above the model's long-context threshold count as more than one quota request. Requests beyond a plan's allowance bill the wallet per token.
Can I switch between Gemini 3.8 Flash and Gemini 3.7 Flash without changing code?
The API key, base URL, endpoint and request shape stay the same — Router One serves both on /v1/chat/completions, so switching is a model-string change. Per Google's docs (checked 2026-11-05), on Google's own Gemini API the two models have the same token limits and the same thinking levels (low, medium and high, with medium as the default; minimal returns an error there). Check the vendor status as well: per Google's Gemini API release notes (October 8, 2026; checked 2026-11-05), Google has deprecated gemini-3.7-flash on the Gemini API, names gemini-3.8-flash as its replacement and routes requests for gemini-3.7-flash to gemini-3.8-flash, so start new work on google/gemini-3.8-flash. Per Google's Gemini 3.8 Flash guide (checked 2026-11-05), Gemini 3.8 Flash can use more tokens on long-running, complex tasks by design, so run your own prompts on both before you move an existing workload.
Where do these numbers come from?
Specs and prices on this page render from the live Router One catalog — the same data as the /models page — and refresh with it. Pricing methodology is documented on /pricing-methodology. Rates on this page were read from the live catalog on 2026-11-10 (UTC) and refresh within the hour.