Claude Sonnet 4.5 (Bedrock) vs Kimi K2 (Groq): API Cost Comparison
Compare the API pricing, context windows, features, and real-world cost projections for Claude Sonnet 4.5 (Bedrock) (AWS Bedrock) and Kimi K2 (Groq) (Groq). 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: Kimi K2 (Groq) at $25.00/month.
| Alert | |||||||
|---|---|---|---|---|---|---|---|
BestKimi K2 (Groq) | Groq | $25.00 | $0.002500 | $10.00 | $15.00 | 76.2% | 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 Sonnet 4.5 (Bedrock) | Kimi K2 (Groq) | Cheaper |
|---|---|---|---|
| Input (standard) | $3.00/M | $1.00/M | Kimi K2 (Groq) |
| Output | $15.00/M | $3.00/M | Kimi K2 (Groq) |
Prices last verified: 2026-03-06 – 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 Sonnet 4.5 (Bedrock)Monthly | Kimi K2 (Groq)Monthly | Claude Sonnet 4.5 (Bedrock)Per request | Kimi K2 (Groq)Per request |
|---|---|---|---|---|
| 1K requests/mo | $10.50 | $2.50 | $0.010500 | $0.002500 |
| 10K requests/mo | $105.00 | $25.00 | $0.010500 | $0.002500 |
| 100K requests/mo | $1,050.00 | $250.00 | $0.010500 | $0.002500 |
| 1M requests/mo | $10,500.00 | $2,500.00 | $0.010500 | $0.002500 |
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 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
When to Choose Kimi K2 (Groq)
by Groq
- Code generation
- RAG / Semantic search
Input / 1M tokens
$1.00/M
Output / 1M tokens
$3.00/M
Context window
256,000
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 Sonnet 4.5 (Bedrock) | Kimi K2 (Groq) |
|---|---|---|
| Context window | 200,000 tokens | 256,000 tokens |
| Max output tokens | 8,192 tokens | 32,768 tokens |
| Performance tier | Premium | Premium |
| Vision / image input | Yes | No |
| Function calling | Yes | Yes |
| JSON mode | Yes | Yes |
| Prompt caching | No | No |
| Batch API (50% discount) | Yes | No |
| Extended reasoning | No | No |
| Fine-tuning | No | No |
| Rate limit (req/min) | Not published | 30 |
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.
Kimi K2 (Groq) notes
Moonshot AI's flagship model on Groq hardware.
Frequently Asked Questions
Is Claude Sonnet 4.5 (Bedrock) cheaper than Kimi K2 (Groq)?
At standard usage (1,000 input tokens, 500 output tokens, 100,000 requests/month), Kimi K2 (Groq) costs $250.00/month versus $1,050.00/month for Claude Sonnet 4.5 (Bedrock) — a 76% saving. Your actual savings will vary based on your token profile; output-heavy workloads amplify differences in output pricing.
Which model has a larger context window, Claude Sonnet 4.5 (Bedrock) or Kimi K2 (Groq)?
Kimi K2 (Groq) has a larger context window at 256,000 tokens, compared to 200,000 tokens for Claude Sonnet 4.5 (Bedrock). A larger context window is important for processing long documents, multi-turn conversations, or large codebases without truncation.
Do Claude Sonnet 4.5 (Bedrock) and Kimi K2 (Groq) support the Batch API?
Claude Sonnet 4.5 (Bedrock) supports the Batch API (50% discount for async processing), while Kimi K2 (Groq) does not. If your workload tolerates up to 24-hour latency, routing to Claude Sonnet 4.5 (Bedrock) with batch pricing could significantly cut costs versus Kimi K2 (Groq)'s standard rate.
Which model offers better prompt caching?
Neither Claude Sonnet 4.5 (Bedrock) nor Kimi K2 (Groq) 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 Sonnet 4.5 (Bedrock) vs Kimi K2 (Groq)?
Both models are well-suited for Code generation. Claude Sonnet 4.5 (Bedrock) is particularly strong for Content Creation, General chatbot. Kimi K2 (Groq) is favored for RAG / Semantic search. 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 Sonnet 4.5 (Bedrock) vs Kimi K2 (Groq)?
At 1,000 input tokens and 500 output tokens per request — a typical conversational workload — Claude Sonnet 4.5 (Bedrock) costs $0.010500 per request and Kimi K2 (Groq) costs $0.002500 per request. At 100,000 requests/month, that translates to $1,050.00 and $250.00 respectively. Use the interactive calculator to adjust these parameters for your actual workload.
Claude Sonnet 4.5 (Bedrock) vs Kimi K2 (Groq): Summary
When comparing Claude Sonnet 4.5 (Bedrock) and Kimi K2 (Groq) for API cost, the right choice depends on your workload's token profile, required features, and tolerance for latency. Kimi K2 (Groq) offers lower total cost at standard usage volumes (1,000 input + 500 output tokens per request at 100,000 requests/month) at $250.00/month, compared to $1,050.00/month for Claude Sonnet 4.5 (Bedrock).
Both models are priced in USD per million tokens, the standard unit across all major AI API providers. Claude Sonnet 4.5 (Bedrock) charges $3.00/M for input tokens and $15.00/M for output tokens. Kimi K2 (Groq) charges $1.00/M input and $3.00/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: Kimi K2 (Groq) supports up to 256,000 tokens in a single request, versus 200,000 tokens for Claude Sonnet 4.5 (Bedrock). 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 Sonnet 4.5 (Bedrock) or Kimi K2 (Groq) is recommended.