provider (Console Go): constant rate_limit_exceeded despite usage far below quota

Description

Constant [rate_limit_exceeded] errors from provider (Console Go) on every request, even though the usage dashboard shows all quotas far from exhausted (5h: 6%, weekly: 57%, monthly: 23.2%). The UI keeps scheduling automatic retries ("Retry attempt N scheduled") which also fail, making the session unusable.

Exact error:

Retry attempt 4 scheduled: Error from provider (Console Go): Upstream request failed: [rate_limit_exceeded] Rate limit exceeded. Please retry after a brief wait.

The usage dashboard at the same time shows:

• 5-hour window: 6%, resets in ~3h
• Weekly: 57%, resets in ~9h
• Monthly: 23.2%, resets in ~24 days

So either the client is hitting a different (much lower) upstream limit than the one displayed, or the displayed quota is stale/wrong, or requests are misattributed to the wrong account/bucket.

Plugins

None (default config; only a local MCP server configured, unrelated to model requests).

OpenCode version

1.18.18 (CLI). Note: the runtime diagnostics snapshot in-session reported 0.0.0-beta-19157 / channel beta — flagging in case the mismatch matters.

Steps to reproduce

1. Open an opencode session using the Muse Spark model (default auth, no custom provider in opencode.jsonc).
2. Send any message.
3. Observe Error from provider (Console Go): Upstream request failed: [rate_limit_exceeded] with automatic retries that also fail.
4. Check the usage dashboard: all windows well below 100%.

Screenshot and/or share link

No screenshot; error text pasted above verbatim.

OS

macOS 25.3.0 (darwin arm64)

Terminal

Apple_Terminal (TERM=xterm-256color, COLORTERM=truecolor)

Additional context

• Shell: /bin/zsh. Install appears to be a beta/release CLI build (1.18.18).
• Frequency: constant, not intermittent — reproduces on every request.
• Only model tested: Muse Spark (no other model tried, so unknown whether provider-wide or model-specific).
• No workaround tried yet.
• No recent config change on the user side (minimal opencode.jsonc: single local MCP server only).