[BOT ISSUE] Bedrock: add missing pricing for Gemma 4 models (31b, 26b-a4b, e2b)

[github-actions]

Bedrock Gemma 4 models missing pricing

Three Google Gemma 4 models on Bedrock have catalog entries but are missing all pricing fields. AWS Bedrock pricing page lists per-token costs for these models.

Affected models

Model ID	Missing Fields	Correct Pricing (per M tokens)
google.gemma-4-31b	input_cost, output_cost	$0.14 input / $0.40 output
google.gemma-4-26b-a4b	input_cost, output_cost	$0.13 input / $0.40 output
google.gemma-4-e2b	input_cost, output_cost	$0.04 input / $0.08 output

All three entries currently have format, flavor, multimodal, displayName, reasoning, max_input_tokens, and available_providers but no cost fields.

Source

• AWS Bedrock Pricing — Google models section lists all three with pricing

[github-actions]

Prepared catalog updates for google.gemma-4-31b, google.gemma-4-26b-a4b, google.gemma-4-e2b. Updated models: google.gemma-4-31b, google.gemma-4-26b-a4b, google.gemma-4-e2b.

Verification sources: https://aws.amazon.com/bedrock/pricing/, https://docs.aws.amazon.com/bedrock/latest/userguide/model-cards.html
Verified metadata applied:

• google.gemma-4-31b: format=openai, flavor=chat, displayName=Gemma 4 31B, max_input_tokens=256000, max_output_tokens=not provided, pricing(input/output per 1M)=0.14/0.4, providers=bedrock, reasoning=true, multimodal=true
• google.gemma-4-26b-a4b: format=openai, flavor=chat, displayName=Gemma 4 26B A4B, max_input_tokens=256000, max_output_tokens=not provided, pricing(input/output per 1M)=0.13/0.4, providers=bedrock, reasoning=true, multimodal=true
• google.gemma-4-e2b: format=openai, flavor=chat, displayName=Gemma 4 E2B, max_input_tokens=128000, max_output_tokens=not provided, pricing(input/output per 1M)=0.04/0.08, providers=bedrock, reasoning=true, multimodal=true

Included in the daily batch PR: #1081