free_tier): List models.
If you just want the short version:
- Use
qwen-3.6-plusfor the best default — free tier - Use
deepseek-v4-flashfor 1M context — free tier - Use
kimi-k2.6for tool-heavy agents — needs a top-up - Use
deepseek-r1for hard reasoning — needs a top-up - Use
gemini-3-flashfor a second 1M-context option — needs a top-up
A new account’s signup credit is added once your email is verified and spends on free tier models only. Anything marked “needs a top-up” returns
402 model_requires_paid until you buy credits. The Free tier column below, and free_tier on GET /v1/models, say which is which for every model.Quick decision guide
Use cases that matter
1. I just need one model
Start withqwen-3.6-plus.
That is the right answer most of the time if you are building:
- a chatbot
- a coding assistant
- an internal copilot
- a general-purpose product feature
2. I am building an agent
Start withkimi-k2.6.
If your agent:
- calls tools
- works across multiple steps
- reads screenshots or other visual context
- needs long sessions
kimi-k2.6 is the best first pick. It needs a funded balance; on the free tier, start with qwen-3-coder or qwen-3.6-plus, both of which support tool calling.
If you want a text-only engineering alternative, try glm-5.1 (also needs a top-up).
3. I care about cost
Start withdeepseek-v4-flash (alias cheap) for strong value.
If the workload is more repetitive and automation-heavy than quality-sensitive, consider:
glm-4.5-airgpt-oss-120b
4. I need deep reasoning
Usedeepseek-r1.
This is the right pick for:
- hard analysis
- logic-heavy tasks
- math
- planning where quality matters more than speed
5. I need long context
Usegemini-3-flash.
If you want cheaper long-context throughput and do not need multimodal input, look at deepseek-v4-flash (1M context, alias cheap, free tier).
6. I need live web data
Usesonar (alias search).
It runs a real-time web search on every request and returns a current, cited answer — for news, prices, releases, and anything that changes after a model’s training cutoff. For deeper multi-step research and longer reports, use sonar-pro. Both are outside the free tier and need a top-up first.
Both bill a small flat web-search fee on top of tokens (see pricing), and neither supports tool calling — the search happens internally, so you just ask a question.
Multimodal
Image models bill per call instead of per token, and run through a separate async endpoint - see/v1/images/generations and /v1/videos/generations.
Image (per-image pricing)
Of the image models, only
minimax-image-01 is in the free tier; the rest return 402 model_requires_paid until your first top-up.
Video
One video model on/v1/videos/generations: veo-3.1-fast (720p with native speech and sound, 4/6/8s). The other video ids are still paused and return 404 model_not_found. See Video Generation.
Canonical sources
For the current live catalog, use:Switching models
You do not need to change your integration. Just change themodel parameter: