Claude 3.5 Sonnet v2 (Bedrock) vs Claude Sonnet 4.5 (Bedrock): API Cost Comparison
Compare the API pricing, context windows, features, and real-world cost projections for Claude 3.5 Sonnet v2 (Bedrock) (AWS Bedrock) and Claude Sonnet 4.5 (Bedrock) (AWS Bedrock). Use the interactive calculator below to compute your exact monthly cost based on your token usage and request volume.
Prices verified Mar 11, 2026
Interactive Cost Calculator
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Showing costs for 2 models. Cheapest: Claude 3.5 Sonnet v2 (Bedrock) at $105.00/month.
| Alert | |||||||
|---|---|---|---|---|---|---|---|
BestClaude 3.5 Sonnet v2 (Bedrock) | AWS Bedrock | $105.00 | $0.010500 | $30.00 | $75.00 | — | Alerts coming soon |
Claude Sonnet 4.5 (Bedrock) | AWS Bedrock | $105.00 | $0.010500 | $30.00 | $75.00 | — | Alerts coming soon |
Monthly Cost Comparison
Price Comparison at a Glance
All prices are in USD per 1 million tokens ($/M tokens). Lower is cheaper.
| Pricing Type | Claude 3.5 Sonnet v2 (Bedrock) | Claude Sonnet 4.5 (Bedrock) | Cheaper |
|---|---|---|---|
| Input (standard) | $3.00/M | $3.00/M | — |
| Output | $15.00/M | $15.00/M | — |
Prices last verified: 2026-03-11
Cost Breakdown by Usage Volume
Estimated monthly costs at different request volumes, assuming 1,000 input tokens and 500 output tokens per request. Adjust in the calculator above for your specific use case.
| Volume | Claude 3.5 Sonnet v2 (Bedrock)Monthly | Claude Sonnet 4.5 (Bedrock)Monthly | Claude 3.5 Sonnet v2 (Bedrock)Per request | Claude Sonnet 4.5 (Bedrock)Per request |
|---|---|---|---|---|
| 1K requests/mo | $10.50 | $10.50 | $0.010500 | $0.010500 |
| 10K requests/mo | $105.00 | $105.00 | $0.010500 | $0.010500 |
| 100K requests/mo | $1,050.00 | $1,050.00 | $0.010500 | $0.010500 |
| 1M requests/mo | $10,500.00 | $10,500.00 | $0.010500 | $0.010500 |
Green values indicate the lower-cost option at each volume tier. Cost per request is calculated at 1,000 input + 500 output tokens using standard (non-batch, non-cached) pricing.
Price History
Input price per 1M tokensWhen to Choose Claude 3.5 Sonnet v2 (Bedrock)
by AWS Bedrock
- Code generation
- Data extraction
- Content Creation
Input / 1M tokens
$3.00/M
Output / 1M tokens
$15.00/M
Context window
200,000
Tier
premium
When to Choose Claude Sonnet 4.5 (Bedrock)
by AWS Bedrock
- Code generation
- Content Creation
- General chatbot
Input / 1M tokens
$3.00/M
Output / 1M tokens
$15.00/M
Context window
200,000
Tier
premium
Key Differences Beyond Price
Cost is only one factor in choosing an AI model. Context window size, rate limits, supported features, and latency all affect whether a model fits your use case.
| Capability | Claude 3.5 Sonnet v2 (Bedrock) | Claude Sonnet 4.5 (Bedrock) |
|---|---|---|
| Context window | 200,000 tokens | 200,000 tokens |
| Max output tokens | 8,192 tokens | 8,192 tokens |
| Performance tier | Premium | Premium |
| Vision / image input | Yes | Yes |
| Function calling | Yes | Yes |
| JSON mode | Yes | Yes |
| Prompt caching | No | No |
| Batch API (50% discount) | Yes | Yes |
| Extended reasoning | No | No |
| Fine-tuning | No | No |
Claude 3.5 Sonnet v2 (Bedrock) notes
Claude 3.5 Sonnet v2 via AWS Bedrock. Supports computer use. AWS IAM auth with full CloudTrail audit logging.
Claude Sonnet 4.5 (Bedrock) notes
Claude Sonnet 4.5 accessed via AWS Bedrock. Pricing matches Anthropic direct. AWS IAM auth, VPC support, and CloudWatch logging available.
Frequently Asked Questions
Is Claude 3.5 Sonnet v2 (Bedrock) cheaper than Claude Sonnet 4.5 (Bedrock)?
Claude 3.5 Sonnet v2 (Bedrock) and Claude Sonnet 4.5 (Bedrock) cost the same at standard usage (1,000 input + 500 output tokens, 100K requests/month): $1,050.00/month each. For different token ratios, use the calculator above.
Which model has a larger context window, Claude 3.5 Sonnet v2 (Bedrock) or Claude Sonnet 4.5 (Bedrock)?
Both Claude 3.5 Sonnet v2 (Bedrock) and Claude Sonnet 4.5 (Bedrock) have the same context window: 200,000 tokens.
Do Claude 3.5 Sonnet v2 (Bedrock) and Claude Sonnet 4.5 (Bedrock) support the Batch API?
Yes — both Claude 3.5 Sonnet v2 (Bedrock) and Claude Sonnet 4.5 (Bedrock) support batch API processing, which offers a 50% discount on input and output costs in exchange for up to 24-hour turnaround. Ideal for offline workloads like bulk document processing or nightly classification pipelines.
Which model offers better prompt caching?
Neither Claude 3.5 Sonnet v2 (Bedrock) nor Claude Sonnet 4.5 (Bedrock) currently supports prompt caching. For prompt-caching capable alternatives, consider Claude models from Anthropic or GPT-4o from OpenAI.
What are the best use cases for Claude 3.5 Sonnet v2 (Bedrock) vs Claude Sonnet 4.5 (Bedrock)?
Both models are well-suited for Code generation, Content Creation. Claude 3.5 Sonnet v2 (Bedrock) is particularly strong for Data extraction. Claude Sonnet 4.5 (Bedrock) is favored for General chatbot. At the same quality level, the lower-cost model is usually preferable; use this page's calculator to compare total monthly spend at your volume.
What is the cost per request for Claude 3.5 Sonnet v2 (Bedrock) vs Claude Sonnet 4.5 (Bedrock)?
At 1,000 input tokens and 500 output tokens per request — a typical conversational workload — Claude 3.5 Sonnet v2 (Bedrock) costs $0.010500 per request and Claude Sonnet 4.5 (Bedrock) costs $0.010500 per request. At 100,000 requests/month, that translates to $1,050.00 and $1,050.00 respectively. Use the interactive calculator to adjust these parameters for your actual workload.
Claude 3.5 Sonnet v2 (Bedrock) vs Claude Sonnet 4.5 (Bedrock): Summary
When comparing Claude 3.5 Sonnet v2 (Bedrock) and Claude Sonnet 4.5 (Bedrock) for API cost, the right choice depends on your workload's token profile, required features, and tolerance for latency. Both models cost the same at standard usage volumes (1,000 input + 500 output tokens per request at 100,000 requests/month) at $1,050.00/month.
Both models are priced in USD per million tokens, the standard unit across all major AI API providers. Claude 3.5 Sonnet v2 (Bedrock) charges $3.00/M for input tokens and $15.00/M for output tokens. Claude Sonnet 4.5 (Bedrock) charges $3.00/M input and $15.00/M output. If your workload is output-heavy (more tokens generated than consumed as input), the model with the lower output price compounds cost savings significantly at scale.
Context window capacity differs between the two: Both models support 200,000 tokens per request. A larger context window is essential for document summarization, large codebase analysis, and multi-document retrieval-augmented generation (RAG) applications.
Use the interactive calculator at the top of this page to enter your actual token usage and monthly request volume for a precise cost comparison tailored to your workload. Adjust for batch API discounts and prompt caching to find the most cost-effective option for your specific deployment.
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Relevant Use Cases
See cost recommendations for workloads where Claude 3.5 Sonnet v2 (Bedrock) or Claude Sonnet 4.5 (Bedrock) is recommended.