gpt-5.5 vs kimi-k3.1-pro: pricing and capabilities compared
In each model's cheapest group on this site, gpt-5.5 costs ¥10 input and ¥80 output (Standard group) and kimi-k3.1-pro costs ¥18.2 input and ¥95.19 output (China Models group), per 1M tokens.
gpt-5.5 is cheaper on input, output and cache reads, by 45%, 16% and 45% respectively.
gpt-5.5 is offered in 6 groups and kimi-k3.1-pro in 2 groups. Groups offering both: Standard; a key in any of them can call either model.
Prices updated Nov 13, 2026, 6:08 PM
At a glance
| Item | gpt-5.5 | kimi-k3.1-pro |
|---|---|---|
| Vendor | OpenAI | Moonshot Kimi |
| Billing | Per token | Per token |
| Cheapest group | Standard | China Models |
| Input ¥ per 1M tokens | ¥1045% lower | ¥18.2 |
| Output ¥ per 1M tokens | ¥8016% lower | ¥95.19 |
| Cache read ¥ per 1M tokens | ¥145% lower | ¥1.82 |
| Groups | 6 groups | 2 groups |
| Input types | — | text and images |
| Output types | — | text |
| Capability tags | Multimodal, Reasoning and Responses API | Vision, Multimodal, Tool use, Reasoning and File analysis |
| Endpoints | Chat Completions | Chat Completions |
| Available since | Apr 24, 2026 | Oct 24, 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 —.
Prices in every group
The same model costs different amounts in different groups; a key's group decides its line and its price.
| Group | Input ¥ per 1M tokens | Output ¥ per 1M tokens | Cache read ¥ per 1M tokens |
|---|---|---|---|
| StandardCheapestBoth | ¥10 | ¥80 | ¥1 |
| Azure | ¥10 | ¥80 | ¥1 |
| Azure Plus | ¥15 | ¥120 | ¥1.5 |
| OpenAI Direct | ¥22.5 | ¥180 | ¥2.25 |
| OpenAI Direct Plus | ¥30 | ¥240 | ¥3 |
| Official · Enterprise | ¥54.75 | ¥438 | ¥5.48 |
| Group | Input ¥ per 1M tokens | Output ¥ per 1M tokens | Cache read ¥ per 1M tokens |
|---|---|---|---|
| StandardBoth | ¥26 | ¥135.98 | ¥2.6 |
| China ModelsCheapest | ¥18.2 | ¥95.19 | ¥1.82 |
How to choose
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): gpt-5.5 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: gpt-5.5 ¥1, kimi-k3.1-pro ¥1.82 (per 1M tokens).
- Both support Chat Completions, so requests look the same and switching means changing the model parameter (the key's groups must offer both models).
- If production needs a known request source, use official or cloud groups. gpt-5.5: Azure, Azure Plus, OpenAI Direct, OpenAI Direct Plus and Official · Enterprise; kimi-k3.1-pro: none on this site.
How to call them
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.
- gpt-5.5: prices in every group, availability and API docs
- kimi-k3.1-pro: prices in every group, availability and API docs
- Every OpenAI model and its price
- Every Moonshot Kimi model and its price
- Chat Completions 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
More comparisons
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- claude-opus-5-5 vs kimi-k3.1-pro
- deepseek-v4-pro vs kimi-k3.1-pro
- gpt-5.5 vs gemini-4-carbon
- gpt-5.5 vs qwen3.8-max
- gpt-5.5 vs glm-5.3
- gpt-6-sol vs kimi-k3.1-pro
- gemini-4-carbon vs kimi-k3.1-pro
- qwen3.8-max vs kimi-k3.1-pro
- kimi-k3.1-pro vs glm-5.3
FAQ
Which is cheaper, gpt-5.5 or kimi-k3.1-pro?
In each model's cheapest group on this site, gpt-5.5 costs ¥10 input and ¥80 output (Standard group) and kimi-k3.1-pro costs ¥18.2 input and ¥95.19 output (China Models group), per 1M tokens. gpt-5.5 is cheaper on input, output and cache reads, by 45%, 16% and 45% respectively. What you actually pay depends on the split between input and output tokens and on the group you use. Prices updated Nov 13, 2026, 6:08 PM.
How do I call gpt-5.5 and kimi-k3.1-pro?
Create an API key in the console, set your SDK's base_url to https://www.tutujin.com/v1 and use gpt-5.5 or kimi-k3.1-pro as the model. gpt-5.5 supports: Chat Completions. kimi-k3.1-pro supports: Chat Completions.
Which groups offer gpt-5.5 and kimi-k3.1-pro?
gpt-5.5: Standard, Azure, Azure Plus, OpenAI Direct, OpenAI Direct Plus and Official · Enterprise. kimi-k3.1-pro: Standard and China Models. Groups offering both: Standard; a key in any of them can call either model.
Where do the prices on this page come from?
From our live price list — the same data as the model pages and the models page — shown for each model's cheapest group. Prices updated Nov 13, 2026, 6:08 PM.