Model error diagnosis

ByteDance: UI-TARS 7B | model capability unsupported

ByteDance: UI-TARS 7B returning 400 / model capability unsupported means you should first confirm whether model ID bytedance/ui-tars-1.5-7b is visible for this ByteDance (Doubao) key, then separate permission, context, capability, rate limit, or route issues.

Model

bytedance/ui-tars-1.5-7b

ByteDance: UI-TARS 7B

Provider

ByteDance (Doubao)

1 models in catalog

Error type

model capability unsupported

capability-unsupported

Status code

400

China model route

Model error summary

Model

bytedance/ui-tars-1.5-7b

Error type

capability-unsupported

Status code

400

Read-only check. Detection data burns after 5 minutes.

What this model error usually means

ByteDance: UI-TARS 7B returning 400 / model capability unsupported means you should first confirm whether model ID bytedance/ui-tars-1.5-7b is visible for this ByteDance (Doubao) key, then separate permission, context, capability, rate limit, or route issues.

Model: bytedance/ui-tars-1.5-7b
Provider: ByteDance (Doubao)
Status code: 400

How to prove it during checking

Read-only check. Detection data burns after 5 minutes.

List models: confirm whether bytedance/ui-tars-1.5-7b is actually visible instead of guessing from the display name.
Light probe: use minimal input to verify whether ByteDance (Doubao) returns the same 400, then record the error body.
Compare model facts: context 128,000, input $0.100, output $0.200.
supports frequency_penalty
supports logit_bias
supports max_tokens
supports presence_penalty

Next action

ByteDance: UI-TARS 7B model capability unsupported should not end at failed. Return the next move: change model ID, add permission, reduce context, disable unsupported capability, change route, monitor, or hold listing.

Context: 128,000
Price: $0.100 / $0.200
Read-only check. Detection data burns after 5 minutes.

Open key check

Read-only check. Detection data burns after 5 minutes.

Open models

ByteDance: UI-TARS 7B

Open providers

ByteDance (Doubao)