claude-sonnet-5-5 vs gemini-3.8-flash: pricing and capabilities compared

At a glance

Item	claude-sonnet-5-5	gemini-3.8-flash
Vendor	Anthropic	Google
Billing	Per token	Per token
Cheapest group	Claude Lite	Standard
Input ¥ per 1M tokens	¥3.2	¥1.553% lower
Output ¥ per 1M tokens	¥16	¥7.553% lower
Cache read ¥ per 1M tokens	¥0.32	¥0.1553% lower
Groups	6 groups	4 groups
Input types	text and images	text, images, video and audio
Output types	text	text
Capability tags	Vision and Reasoning	Vision and Reasoning
Endpoints	Chat Completions and Claude Messages	Chat Completions and Gemini generateContent
Available since	Sep 30, 2026	Aug 21, 2026

Prices are each model's cheapest group, in CNY; the side marked "lower" is cheaper. Data comes from our price list and model catalog; anything not listed shows as —.

These points use each model's cheapest-group prices and catalog data. Before going live, run real requests with a key in your target group and check quality, speed and billing.

• On unit prices alone (each at its cheapest group): gemini-3.8-flash is cheaper on input, output and cache reads, so the same token usage costs less.
• When you resend the same long prefix (a fixed system prompt, the same long document), cached input is billed at the cache-read price: claude-sonnet-5-5 ¥0.32, gemini-3.8-flash ¥0.15 (per 1M tokens).
• If you need audio input: gemini-3.8-flash accepts audio; claude-sonnet-5-5 lists text and images as input.
• If you need video input: gemini-3.8-flash accepts video; claude-sonnet-5-5 lists text and images as input.
• Both support Chat Completions, so requests look the same and switching means changing the model parameter (the key's groups must offer both models).
• To call through Claude Messages: of the two, only claude-sonnet-5-5 supports it on this site.
• To call through Gemini generateContent: of the two, only gemini-3.8-flash supports it on this site.
• If production needs a known request source, use official or cloud groups. claude-sonnet-5-5: Official · Enterprise, Claude Direct and Claude List Price; gemini-3.8-flash: Official · Enterprise, Gemini Plus and Gemini High Tier.

Both models work with a Tutujin API key: set your SDK's base_url to https://www.tutujin.com/v1 and use the model name; everything else is written as with the official SDK.

• claude-sonnet-5-5: prices in every group, availability and API docs
• gemini-3.8-flash: prices in every group, availability and API docs
• Every Anthropic model and its price
• Every Google model and its price
• Chat Completions API reference
• Claude Messages API reference
• Gemini generateContent API reference
• Quickstart: create a key and send your first request
• How to choose a group
• Models page: every model with prices in every group
• How billing works: pay as you go, groups and balance