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Palmyra X4

ActiveWriterwriter/palmyra-x41 platform

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Next shutdown
None setNo date on 1 platform
List price · $ per 1M
$2.50 in $10.00 outAmazon Bedrock
Context window
128KMax output 4.1K tokens

Dates on every platform

1 listings · a floor is the earliest possible date
Palmyra X4 on each platform: model ID, status, dates, replacement and source
PlatformModel ID and statusDeprecatedShuts downReplacement
Amazon BedrockAmazon Web Services: Amazon Bedrock ListFoundationModels, us-east-1 (opens in a new tab) · checked Oct 14, 2026writer.palmyra-x4-v1:0Active · also us.writer.palmyra-x4-v1:0–None set–

In us-east-1, requests go through a cross-Region inference profile (listed in aliases).

What breaks when you move off Palmyra X4

No breaking changes are recorded for Palmyra X4.

List prices

$ per 1M tokens, with each price’s source
List prices per 1M tokens, in US dollars
PlatformInputCachedOutputIn effectSource
Amazon Bedrockwriter.palmyra-x4-v1:0$2.50–$10.00Jul 1, 2026Current · Standard tier.Amazon Web Services: AWS Price List API: AmazonBedrockFoundationModels, us-east-1 (opens in a new tab)

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