--- title: "claude-sonnet-4-5-20250929 - Model Details & Comparison" description: "claude-sonnet-4-5-20250929 from Anthropic: capabilities, context limits, pricing, and side-by-side comparisons with alternative models." url: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/anthropic/claude-sonnet-4-5-20250929" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/anthropic/claude-sonnet-4-5-20250929.md" --- # claude-sonnet-4-5-20250929 - Model Details & Comparison > claude-sonnet-4-5-20250929 from Anthropic: capabilities, context limits, pricing, and side-by-side comparisons with alternative models. ## Important Links - [View MCP Gateway](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources/mcp-gateway.md) - [Features](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/#features) - [Enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Docs](https://docs.getbifrost.ai) - [GitHub](https://github.com/maximhq/bifrost) - [Book a Demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) ## About claude-sonnet-4-5-20250929 claude-sonnet-4-5-20250929 is a chat model from Anthropic, one of 24 chat models they offer. It is priced at $3.00 per 1M input tokens and $15.00 per 1M output tokens, ranking 2297 out of 2669 chat models by cost and cheaper than 11% of models in this category. claude-sonnet-4-5-20250929 supports vision, function calling, reasoning, web search, prompt caching, structured output. Its 200K-token context window is in the top 41% among chat models. ## Specifications - **Anthropic Provider.** - **Chat Mode.** - **200,000 Max Input Tokens.** - **64,000 Max Output Tokens.** - **64,000 Max Tokens.** - **$3.00 / 1M tokens Input Price.** - **$15.00 / 1M tokens Output Price.** ## Capabilities claude-sonnet-4-5-20250929 supports: Function Calling, Vision, Reasoning, Web Search, Prompt Caching, Response Schema, Tool Choice, PDF Input, Computer Use. ## claude-sonnet-4-5-20250929 Pricing Overview At $3.00 per 1M input tokens and $15.00 per 1M output tokens, claude-sonnet-4-5-20250929 ranks 2297 out of 2669 chat models by input cost. It is more expensive compared to the median of $0.50 for chat models, and is cheaper than 11% of models in this category. claude-sonnet-4-5-20250929 is one of 24 Anthropic chat models, with support for vision, function calling, reasoning, web search, prompt caching, structured output. its 200K-token context window places it in the top 41% of chat models. ## Models to Compare Alternatives to claude-sonnet-4-5-20250929 with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | anthropic.claude-sonnet-4-6 | AWS Bedrock | $3.00 | $15.00 | | global.anthropic.claude-sonnet-4-6 | AWS Bedrock | $3.00 | $15.00 | | us.anthropic.claude-sonnet-4-6 | AWS Bedrock | $3.30 | $16.50 | | eu.anthropic.claude-sonnet-4-6 | AWS Bedrock | $3.30 | $16.50 | | au.anthropic.claude-sonnet-4-6 | AWS Bedrock | $3.30 | $16.50 | - [Compare anthropic.claude-sonnet-4-6](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/anthropic.claude-sonnet-4-6.md) - [Compare global.anthropic.claude-sonnet-4-6](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/global.anthropic.claude-sonnet-4-6.md) - [Compare us.anthropic.claude-sonnet-4-6](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/us.anthropic.claude-sonnet-4-6.md) - [Compare eu.anthropic.claude-sonnet-4-6](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/eu.anthropic.claude-sonnet-4-6.md) - [Compare au.anthropic.claude-sonnet-4-6](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/au.anthropic.claude-sonnet-4-6.md) ## Related Resources - [Calculate claude-sonnet-4-5-20250929 costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/anthropic/model/claude-sonnet-4-5-20250929.md) - [Check Anthropic status](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/provider-status/anthropic.md) - [All Anthropic pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/anthropic.md) ## FAQ ### Is claude-sonnet-4-5-20250929 cheaper than anthropic.claude-sonnet-4-6? No. claude-sonnet-4-5-20250929 costs $3.00 per 1M input tokens while anthropic.claude-sonnet-4-6 costs $3.00 per 1M input tokens, making anthropic.claude-sonnet-4-6 0% more affordable for input. However, claude-sonnet-4-5-20250929 may offer different capabilities or performance characteristics that justify the price difference. ### How does claude-sonnet-4-5-20250929 pricing compare to the average chat model? claude-sonnet-4-5-20250929 input pricing is $3.00 per 1M tokens, which is 500% above the median of $0.50 for chat models. It ranks 2297 out of 2669 chat models by input cost, making it cheaper than 11% of models in this category. For output, it costs $15.00 per 1M tokens compared to the median of $1.44. ### What makes claude-sonnet-4-5-20250929 different from other Anthropic models? Among Anthropic's 24 chat models, claude-sonnet-4-5-20250929 ranks 8 by input cost. ### What are the best alternatives to claude-sonnet-4-5-20250929? The most comparable chat models to claude-sonnet-4-5-20250929 are: anthropic.claude-sonnet-4-6 from AWS Bedrock ($3.00/1M input tokens); global.anthropic.claude-sonnet-4-6 from AWS Bedrock ($3.00/1M input tokens); us.anthropic.claude-sonnet-4-6 from AWS Bedrock ($3.30/1M input tokens); eu.anthropic.claude-sonnet-4-6 from AWS Bedrock ($3.30/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library. ### How do I check if Anthropic is down? You can monitor Anthropic service health in real time on the Bifrost Anthropic Status page. It tracks current component status, active incidents, and historical reliability data pulled from the official status page every 60 seconds. ### How do I calculate claude-sonnet-4-5-20250929 costs? claude-sonnet-4-5-20250929 is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $3.00 and generating 1M output tokens costs $15.00. ## Related Resources - [Anthropic models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/anthropic.md) - [Model library](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library.md) - [LLM cost calculator](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator.md) - [Docs: Bifrost docs](https://docs.getbifrost.ai) - [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost) - [Pricing: Bifrost pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Enterprise: Bifrost enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Book a Demo: Bifrost demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) - [Resources: Bifrost resources](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources.md) --- *This is a markdown version of [https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/anthropic/claude-sonnet-4-5-20250929](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/anthropic/claude-sonnet-4-5-20250929) for AI/LLM consumption.*