Skip to content

fix: add Anthropic models claude-opus-4-8 #670

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Erin McNulty (erin2722) merged 2 commits into from
May 28, 2026
Merged

fix: add Anthropic models claude-opus-4-8 #670

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
54686e0
fix: add Anthropic models claude-opus-4-8
cpinn May 28, 2026
a805d70
remove reasoning_effort: true
erin2722 May 28, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions packages/proxy/schema/index.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -590,6 +590,7 @@ export const AvailableEndpointTypes: { [name: string]: ModelEndpointType[] } = {
"grok-2-1212": ["xAI"],
"grok-vision-beta": ["xAI"],
"grok-beta": ["xAI"],
"claude-opus-4-8": ["anthropic"],
Copy link
Copy Markdown

@chatgpt-codex-connector chatgpt-codex-connector Bot May 28, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

P1 Badge Strip unsupported sampling params for Opus 4.8

Exposing claude-opus-4-8 as an Anthropic model means Chat Completions requests are translated through openaiParamsToAnthropicMesssageParams, but omitUnsupportedAnthropicParams only special-cases the 4.7 model names. Anthropic documents that Opus 4.8 returns 400 for non-default temperature, top_p, or top_k, so common requests that include a temperature (for example temperature: 0.7) will be forwarded and fail unless 4.8 is added to the unsupported-params handling.

Useful? React with 👍 / 👎.

Copy link
Copy Markdown
Contributor

@erin2722 Erin McNulty (erin2722) May 28, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

this is referencing legacy proxy code, so not relevant

Copy link
Copy Markdown
Contributor

@erin2722 Erin McNulty (erin2722) May 28, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

lingua does the same thing though, so need to put up a PR to fix it there

"grok-4.20-0309-non-reasoning": ["xAI"],
"accounts/fireworks/models/deepseek-v4-flash": ["fireworks"],
"accounts/fireworks/models/glm-5": ["fireworks"],
Expand Down
16 changes: 16 additions & 0 deletions packages/proxy/schema/model_list.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2604,6 +2604,22 @@
"max_input_tokens": 100000,
"max_output_tokens": 8191
},
"claude-opus-4-8": {
"format": "anthropic",
"flavor": "chat",
"multimodal": true,
"input_cost_per_mil_tokens": 5,
"output_cost_per_mil_tokens": 25,
"input_cache_read_cost_per_mil_tokens": 0.5,
"input_cache_write_cost_per_mil_tokens": 6.25,
"displayName": "Claude 4.8 Opus",
"reasoning": true,
"max_input_tokens": 1000000,
"max_output_tokens": 128000,
"available_providers": [
"anthropic"
]
},
"meta/llama-2-70b-chat": {
"format": "openai",
"flavor": "chat",
Expand Down
Loading