// ByteDance (Doubao)
UI-TARS 7B
A ByteDance (Doubao) model. 1 prices across 1 channels side by side, each with its source and check date – plus specs, licence, speed and benchmarks.
- Official in/out per 1M
- —
- Lowest (Parasail)
- $0.1 / $0.2
- Context
- 128K
- Prices listed
- 1
Prices checked 2026-10-22Official sources linked on every rowNo estimatesCheapest LLM APIs →
01Specs at a glance
Official values first; gaps filled from OpenRouter’s API where the vendor page is silent.
| Vendor | ByteDance (Doubao) |
|---|---|
| Context window | 128K (128,000 tokens) |
| Max output | 2K |
| Input | Image · Text |
| Output | Text |
| Tool calling / JSON | No / Yes |
| Weights & licence | Open weights · Apache-2.0 · Hugging Face |
| Parameters | 8.3B (from weight files) |
| Released | Jul 22, 2025 |
| Model IDs | bytedance/ui-tars-1.5-7b |
02Prices on 1 channels
Per 1M tokens, in the currency each source publishes (1 USD = 6.7 CNY for the blended column). Sorted: official first, then cheapest.
| Channel | Source | Input | Output | Cache hit | Blended $ | Context | Notes |
|---|---|---|---|---|---|---|---|
| Parasail · bf16 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.1 | $0.2 | $0.1 | 0.125 | 128K | Parasail price as listed on OpenRouter (pass-through; quantization=bf16; discount field=0); not checked against Parasail's own page |
“Official” = vendor pricing page; “Platform” = the platform’s own pricing page; “OpenRouter” = price listed on OpenRouter, not checked on the platform’s site. Click a source tag to open the original page.
03Where you can use it
Derived only from the price sources above. Country restrictions are set by each vendor – check their terms before you sign up.
- Via OpenRouter / provider listed there
Parasail - Self-host the open weights
GPU / VRAM sizing and build plans→ - Free option
UI-TARS-1.5-7B→
04Performance
Speed and AA index from Artificial Analysis public leaderboards (not our own tests); benchmark scores from our benchmark library, best result per benchmark.
05Price changes we recorded
All price changes →From our daily re-checks of the sources above.
No price change recorded since we started tracking (2026-10-10).
06More from ByteDance (Doubao)
FAQ
How much does the UI-TARS 7B API cost?
There is no official pay-as-you-go price in our data. The lowest listed price is $0.1 / $0.2 on Parasail.
What is the context window of UI-TARS 7B?
128K tokens of context, up to 2K output tokens. Platforms may cap it lower – see the table.
Is UI-TARS 7B open source?
Yes, the weights are published on Hugging Face (ByteDance-Seed/UI-TARS-1.5-7B). Licence: Apache-2.0.