[BUG] claude with model sonnet[1m] doesn't accept single messages > 200.000 tokens
Status Closed — not planned
Maintainer reply ✓ Yes — dicksontsai
Activity 9 comments · opened Sep 12, 2025 · closed Jan 13, 2026
💡 Likely answer: A maintainer (dicksontsai, collaborator)
responded on this thread — see the highlighted reply below.
Preflight Checklist
- [x] I have searched existing issues and this hasn't been reported yet
- [x] This is a single bug report (please file separate reports for different bugs)
- [x] I am using the latest version of Claude Code
What's Wrong?
When I try to send a message to claude with model sonnet[1m] in batch mode, I get an api error 400 with the error message, that this execeeds context limit (see below).
What Should Happen?
claude should accept and process the message
Error Messages/Logs
$ cat mylongprompt.md | claude --model=sonnet[1m] -p
API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"input length and `max_tokens` exceed context limit: 199139 + 21333 > 200000, decrease input length or `max_tokens` and try again"},"request_id":"req_xxx"}Steps to Reproduce
take a long text file and pipe it to "claude --model=sonnet[1m] -p
Claude Model
Sonnet (default)
Is this a regression?
No, this never worked
Last Working Version
_No response_
Claude Code Version
1.0.112
Platform
Anthropic API
Operating System
Ubuntu/Debian Linux
Terminal/Shell
Non-interactive/CI environment
Additional Information
_No response_
9 Comments
Found 3 possible duplicate issues:
This issue will be automatically closed as a duplicate in 3 days.
🤖 Generated with Claude Code
Which type of account do you have?
sonnet[1m]is not available to every user. Omitting the request ID makes this report unactionable.I have a premier license with my company.
Quick question for @dicksontsai I started using
sonnet[1m]yesterday with an API key - it seemed to work fine, and I was very glad to see that, even though pricey!It clearly appears to be
sonnet[1m]:<img width="761" height="264" alt="Image" src="https://github.com/user-attachments/assets/7b73178c-46ee-40fe-9acf-e35649374cb2" />
But it's actually not letting me use more than about ~205k tokens.
I'm happy to pay out the wazoo for
sonnet[1m]for a few specific workloads, and apparently have spent around ~$100 on it already? But is something else going on?Okay, something is different now?!
<img width="715" height="555" alt="Image" src="https://github.com/user-attachments/assets/e844a178-ab4e-44ca-a375-637cbffb3acc" />
hats off if someone at anthropic _just_ fixed it 🤣👌
This issue has been inactive for 30 days. If the issue is still occurring, please comment to let us know. Otherwise, this issue will be automatically closed in 30 days for housekeeping purposes.
Now that Opus 4.5 is greatly improved and is the default model I've switched to that. I would definitely be interested in a 1m token Opus 4.5 because I still see frequent auto-compacts but compacting is also slightly faster now, so it's not as painful.
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