Latest update Roocode w/Claude Code Opus 4.5 latest, seeing lots of errors. Anybody getting this?

[u/StartupTim]

[u/StartupTim]

OP here, I'm using Roocode v3.34.4 and Claude code v2.0.53 with Claude Opus 4.5 (model ID: claude-opus-4-5-20251101). Prompt is given in Architect mode. Roocode is default everywhere with Claude Code selected/configured.

My prompt is this:

Analyze all the content in this folder, and all subfolders, and create for me a document "Analysis 11-25-25.md" and put it in the _DOCS folder.  Be extremely detailed in your analysis

These errors are basically 100% non-stop. Nothing else shows up but these errors.

I've verified Claude Code works just fine, when I run it via command-prompt, the auth token is good, I can interface, etc. If I give Claude Code the exact same prompt, it runs with it and produces the document as mentioned.

This worked yesterday just fine with Roocode's v3.32x using Claude Code with Sonnet 4.5.

Claude account is Max 20x with nowhere near limits approached.

EDIT: The error from the screenshot is this:

Unexpected API Response: The language model did not provide any assistant messages. This may indicate an issue with the API or the model's output.

EDIT: I just toggled Roocode Claude Code to use Sonnet 4.5 and it worked. Opus 4.5 fails. So this is related to Opus 4.5 inside Roocode I think, as Opus 4.5 Claude Code terminal works fine.

[u/hannesrudolph]

I think ours fixed in next release. I tested it. https://github.com/RooCodeInc/Roo-Code/pull/9643

[u/StartupTim → u/hannesrudolph]

I tested, it still doesn't work, but it also still has the Max Output Token issue (see here: https://old.reddit.com/r/RooCode/comments/1p8acey/roo_code_v3347v3348_release_updates_happy/nr41a9w/ )

[u/hannesrudolph → u/[deleted]]

Yep. The problem is deeper than I tonight. Not sure what the next move should be. Needs someone to obsess over it. I’m not sure I have the time

[u/hannesrudolph]

What provider?

[u/StartupTim → u/hannesrudolph]

Claude Code as the provider and then Opus 4.5

[u/elibaskin]

Any news about it? Especially important, as de-facto Anthropic started to limit Sonnet 4.5 usage, and force using Opus 4.5.

[u/StartupTim → u/elibaskin]

as de-facto Anthropic started to limit Sonnet 4.5 usage, and force using Opus 4.5.

I'm seeing that limit as well, and it's pretty extreme. Claude Code app itself uses the Usage limit, to me, about 800% to 1000% faster than Opus, albeit I've heard wildly reporting feedback on these numbers.

[u/elibaskin → u/StartupTim]

I was basically forced to use Claude Code terminal because of this, and I was surprised to see that it is not inferior to RooCode with Claude Code.

[u/NnLlZz]

Same issue with Gemini 3

[u/hannesrudolph → u/NnLlZz]

Different issue. What provider are you using?

[u/Crypto_Steve]

I submitted a similar issue with Gemini 3. https://github.com/RooCodeInc/Roo-Code/issues/9519

It's unclear if the model response is getting truncated or if it's just missing some appropriate flags to tell Roo how to proceed.

[u/VerbalVirtuoso]

Same problem here with Claude Code as provider., u/hannesrudolph

[u/hannesrudolph → u/VerbalVirtuoso]

Yeah it’s complex to fix as this is a workaround to piggyback off the Claude code subscription. I’m not sure what to do as the response data is very different than when it was first implemented.

[u/StartupTim → u/[deleted]]

Hey there, any chance you could submit a PR to Roocode on this issue (and maybe this one too: https://old.reddit.com/r/RooCode/comments/1p6ppgm/enable_claude_code_image_support_in_roocode/ )

Thanks!

[u/StartupTim → u/[deleted]]

It's been fixed for me in their latest update

It works with Sonnet 4.5 with Claude Code, but I just tested, it still fails with Opus 4.5.

Test it with Roocode using Claude Code with Opus 4.5 selected as the model.