Token counting is not supported in Bedrock yet

[fasfsfgs]

client = AnthropicBedrock(
        aws_access_key=AWS_BEDROCK_ACCESS_KEY,
        aws_secret_key=AWS_BEDROCK_SECRET_KEY,
    )
client.messages.count_tokens(model="global.anthropic.claude-sonnet-4-5-20250929-v1:0", messages=[{"role": "user", "content": "test"}])

anthropic.AnthropicError: Token counting is not supported in Bedrock yet

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The message I get from trying to count tokens using AnthropicBedrock is pretty clear. It's not supported.

But docs (https://platform.claude.com/docs/en/api/overview#third-party-platform-apis) says Token counting is supported on all 3rd party platform APIs.

That's a bit confusing.

Am I doing something wrong in the sdk?

[fasfsfgs]

Thanks for your reply, @caseyonit. Sadly, bedrock's native api does not support newer models.

As of now, it's stuck on claudes 4.0.

https://docs.aws.amazon.com/bedrock/latest/userguide/count-tokens.html#count-tokens-supported