Gemini 3.8 Flash and Mercury 2.5 Preview

google/gemini-3.8-flash is Google's Gemini 3.8 Flash: text, image, audio, video, and PDF in; text out. 1,048,576-token context, 65,536 max output. GA 2026-09-02. Google intro list is $0.75 / $3.75 per 1M tokens through 2026-12-31. The AIHubMix gemini-3.8-flash-free SKU is a hop plus aliases (google/gemini-3.8-flash-free, gemini-3.8-flash-free), not a second catalog row. OpenRouter list on the BYOK hop matches Gemini 3.7 Flash intro ($0.375 / $1.875).

inception/mercury-2.5-preview is Inception Labs Mercury 2.5 Preview. Text in, text out. 260K context. Thinking and tools. AIHubMix BYOK wire mercury-2.5-preview and OpenRouter BYOK inception/mercury-2.5-preview. List $0.20 / $0.75 per 1M tokens (cache read $0.02 on AIHubMix). Not a free SKU — no platform aihubmix hop.

Same-day hops on existing listings, not new rows: anthropic/claude-fable-5.1 adds AIHubMix BYOK claude-fable-5-1 ($11 / $55 list). qwen/qwen3.8-max adds the 2026-09-02 snapshot as AIHubMix BYOK qwen3.8-max-2026-09-02 ($1.69 / $5.07 list) with aliases qwen/qwen3.8-max-2026-09-02 and qwen3.8-max-2026-09-02.

• App code — Vercel AI SDK or OpenAI SDK.
• Coding agent — anyr claude / anyr opencode / anyr codex (playbook).
• No code — playground.

Try it in the Vercel AI SDK. createAnyRouter() reads ANYROUTER_API_KEY:

import { createAnyRouter } from "@anyr/ai-sdk-provider"
import { generateText } from "ai"

const anyrouter = createAnyRouter()

const { text } = await generateText({
  model: anyrouter("google/gemini-3.8-flash"),
  prompt: "Summarize this diff in three bullets.",
})
console.log(text)

Already on the OpenAI SDK? OpenAI SDK playbook:

import OpenAI from "openai"

const client = new OpenAI({
  baseURL: "https://anyrouter.dev/api/v1",
  apiKey: process.env.ANYROUTER_API_KEY,
})

const res = await client.chat.completions.create({
  model: "google/gemini-3.8-flash",
  messages: [{ role: "user", content: "Hello" }],
})
console.log(res.choices[0]?.message.content)

curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3.8-flash","messages":[{"role":"user","content":"Hello"}]}'

Or launch a coding agent through the anyr CLI:

curl -fsSL https://anyrouter.dev/setup.sh | bash
anyr login
anyr claude --model "google/gemini-3.8-flash"

curl -fsSL https://anyrouter.dev/setup.sh | bash
anyr login
anyr opencode --model "google/gemini-3.8-flash"

curl -fsSL https://anyrouter.dev/setup.sh | bash
anyr login
anyr codex --model "google/gemini-3.8-flash"

More: AI SDK · OpenAI SDK · coding agents.