opencode zen DeepSeek V4 Flash Free requests fail with [invalid_bearer_credential]

[cbrunschen]

Description

I was using opencode connected to DeepSeek V4 Flash Free on opencode zen, and most - but not all! - requests failed with an error,

Upstream request failed: [invalid_bearer_credential] Missing or invalid bearer credential

This happened with version 1.18.3. I upgraded to 1.18.18, and it kept happening.

I then connected to DeepSeek V4 Flash on my opencode go subscription, and the request immediately succeeded, and kept working.

Plugins

None

OpenCode version

1.18.18

Steps to reproduce

1. Connect to opencode zen
2. Choose DeepSeek V4 Flash (Free) as the model
3. Ask some number of requests, most of them seem to be failing at the time of reporting.

Screenshot and/or share link

With DeepSeek V4 Flash Free on OpenCode Zen:

With DeepSeek V4 Flash on OpenCode Go:

Operating System

Ubuntu 26.04

Terminal

Ubuntu terminal

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Upstream request failed: [invalid_bearer_credential] Missing or invalid bearer credential #42273: Same [invalid_bearer_credential] Missing or invalid bearer credential error with similar symptoms on OpenCode Zen

[cbrunschen]

I believe my problem may be the same, but that issue report is flagged for automatic closure due to not using a template and not including enough information. This is my attempt to report the same problem but following contributor guidelines and with enough information and context.

[cbrunschen]

I've just installed opencode2 and made another attempt - I am getting the same mix of successes and failures with DeepSeek V4 Flash Free on opencode zen:

[livecode-tom]

Same here

[pradeepkumar35]

facing the same issue here

[ahmedfaaid]

I am also running into the same issue

[jdfw42]

Same issue here. Windows 11, opencode v1.18.18

[akuhtz]

Same issue here. Windows 11, opencode v1.18.18

[kzolti]

Same issue here. v1.18.16-1. and v1.18.18-1
archlinux 7.1.6-arch1-1

[reynol1]

cause deepseek flash is not free anymore

[ibnkhayatmed]

it's working again, the problem's gone..

[cbrunschen]

A test just now does indeed seem to show requests to DeepSeek V4 Flash Free on opencode zen to be working again, thank you! Closing this.