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Anthropic
anthropic.com › news › claude-sonnet-4-5
Introducing Claude Sonnet 4.5
September 29, 2025 - In Claude Code, we've added ... and shipped a native VS Code extension. We've added a new context editing feature and memory tool to the Claude API that lets agents run even longer and handle even greater complexity....
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AskCodi
askcodi.com › blogs › gpt-5-vs-claude-sonnet-4-5-fastapi-proxy-battle
GPT-5 vs Claude Sonnet 4.5: FastAPI Proxy Battle
October 15, 2025 - Use custom AI models with baked-in prompts in Continue.dev, Cline, Openai Codex & more. 25+ capabilities: code generation, bug detection, refactoring. OpenAI-compatible API. 2-minute setup.
Discussions

[Feature]: FREE API WITH SONNET 4.5, CODEX - HIGH
Feature Description Ready to experience next-gen AI power? Here’s your chance! 💸 Instant $200 Bonus Credit — absolutely free when you register with your GitHub account (older GitHub required). 👉 Si... More on github.com
🌐 github.com
1
October 8, 2025
Introducing Claude Opus 4.5: our strongest model to date
is it me or results for a lot of usual benchmarks seem to be missing... More on reddit.com
🌐 r/ClaudeAI
79
231
November 24, 2025
Hot take: Claude Opus 4.5 is not worth at it 5/25$ price point
🌐 r/cursor
19
37
3 weeks ago
Claude FREE plan = Unlimited Sonnet 4.5 ???
If this is true, pro users really get screwed More on reddit.com
🌐 r/ClaudeAI
48
129
1 month ago
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Anthropic
anthropic.com › claude › sonnet
Claude Sonnet 4.5
September 29, 2025 - Pricing for Sonnet 4.5 starts at $3 per million input tokens and $15 per million output tokens, with up to 90% cost savings with prompt caching and 50% cost savings with batch processing. To learn more, check out our pricing page. To get started, simply use claude-sonnet-4-5 via the Claude API.
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AI/ML API
docs.aimlapi.com › api-references › text-models-llm › anthropic › claude-4-5-sonnet
Claude 4.5 Sonnet | AI/ML API Documentation
3 weeks ago - How can I assist you today?", "refusal": null, "annotations": null, "audio": null, "tool_calls": null }, "finish_reason": "stop", "logprobs": null } ], "model": "anthropic/claude-sonnet-4.5", "usage": { "prompt_tokens": 137, "completion_tokens": 914, "total_tokens": 1051, "completion_tokens_details": null, "prompt_tokens_details": null } } ... import requests import json # for getting a structured output with indentation response = requests.post( "https://api.aimlapi.com/v1/chat/completions", headers={ # Insert your AIML API Key instead of <YOUR_AIMLAPI_KEY>: "Authorization":"Bearer <YOUR_AIMLAPI_KEY>", "Content-Type":"application/json" }, json={ "model":"anthropic/claude-sonnet-4.5", "messages":[ { "role":"user", "content":"Hello" # insert your prompt here, instead of Hello } ] } ) data = response.json() print(json.dumps(data, indent=2, ensure_ascii=False))
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GitHub
github.com › yeongpin › cursor-free-vip › issues › 1233
[Feature]: FREE API WITH SONNET 4.5, CODEX - HIGH · Issue #1233 · yeongpin/cursor-free-vip
October 8, 2025 - 🧩 What You Get Access To: • GPT-5 by OpenAI • Claude-Sonnet-4.5 & Claude-Opus-4.1 by Anthropic • GLM-4.6 by Zhipu AI • DeepSeek-r1 & DeepSeek-v3.1
Published   Oct 08, 2025
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Claude Docs
platform.claude.com › docs › en › about-claude › models › whats-new-claude-4-5
What's new in Claude 4.5 - Claude Docs
1 month ago - Advanced context management: Sonnet 4.5 maintains exceptional state tracking in external files, preserving goal-orientation across sessions. Combined with more effective context window usage and our new context management API features, the model optimally handles information across extended sessions to maintain coherence over time. Context awareness is available in Claude ...
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Claude Docs
platform.claude.com › docs › en › home
Documentation - Claude Docs
Make your first API call in minutes. ... Explore the advanced features and capabilities now available in Claude. ... Discover the latest advancements in Claude 4.5 models.
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Claude
claude.ai
Claude
Talk with Claude, an AI assistant from Anthropic
Find elsewhere
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Windsurf
docs.windsurf.com › windsurf › models
Models - Windsurf Docs
Near Claude 4.5-level performance, at 13x the speed. Read our research announcement. SWE-1: Our first agentic coding model. Achieved Claude 3.5-level performance at a fraction of the cost. SWE-1-mini: Powers passive suggestions in Windsurf Tab, optimized for real-time latency. swe-grep: Powers context retrieval and Fast Context · This is only available to free and paid individual users. For certain models, we allow users to bring their own API keys.
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Databricks
databricks.com › blog › claude-opus-45-here
Claude Opus 4.5 Is Here | Databricks Blog
November 24, 2025 - Data has to be exported to external APIs, stitched back together, and managed across separate tools. This creates governance risks, breaks lineage, and slows adoption. That is why we introduced AI Functions, a simple way to apply LLMs directly to governed enterprise data. Instead of moving data out of secure systems, Databricks brings AI models to your data so you can extend existing data pipelines with AI while preserving governance, lineage, and observability. Now with Claude 4.5...
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Apidog
apidog.com › blog › claude-sonnet-4-5-api
How to Use the Claude Sonnet 4.5 API
September 30, 2025 - Additionally, the 'content-type' header must be 'application/json' to ensure proper request formatting. Claude Sonnet 4.5 integrates with cloud providers like Amazon Bedrock and Google Cloud's Vertex AI, expanding accessibility.
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Heltar
heltar.com › blogs › claude-sonnet-model-charge-for-its-api-tokens
How does the Claude Sonnet 4.5 model charge for its API tokens? | Heltar
November 3, 2025 - The quick answer - Claude Anthropic Sonnet 4.5 charges the following price for 1 Million API tokens (given you use <200K tokens)Input - ..
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Claude
claude.com › product › claude-code
Claude Code - AI coding agent for terminal & IDE | Claude
November 24, 2025 - Yes. Claude Code runs locally in your terminal and talks directly to model APIs without requiring a backend server or remote code index. It also asks for permission before making changes to your files or running commands.
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Heroku Dev Center
devcenter.heroku.com › articles › heroku-inference-api-model-claude-4-5-sonnet
Managed Inference and Agents API with Claude 4.5 Sonnet | Heroku Dev Center
October 23, 2025 - Reference documentation for using the Heroku Managed Inference and Agents add-on API with Claude 4.5 Sonnet.
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Anthropic
anthropic.com › news › claude-haiku-4-5
Introducing Claude Haiku 4.5
October 15, 2025 - Developers can use Claude Haiku 4.5 on our API, Amazon Bedrock, and Google Cloud’s Vertex AI, where it serves as a drop-in replacement for both Haiku 3.5 and Sonnet 4 at our most economical price point.
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CometAPI
cometapi.com › claude-sonnet-4-5-api
Claude Sonnet 4.5 API - CometAPI - All AI Models in One API
October 17, 2025 - Anthropic’s Claude Sonnet 4.5 is a 2025 update focused on long-duration autonomous work, stronger tool/computer use, tighter safety/alignment, and richer developer features (context editing, memory, in-chat code execution and file creation).
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Cursor IDE
cursor-ide.com › blog › claude-sonnet-4-5-pricing
Claude Sonnet 4.5 Pricing Guide 2025: Complete Cost Analysis, Comparison & Calculator - Cursor IDE 博客
October 4, 2025 - Claude Sonnet 4.5 costs $3 per million input tokens and $15 per million output tokens. Comprehensive guide covering API pricing, subscription plans, platform costs, optimization strategies, and enterprise contracts with detailed comparisons to GPT-4 and Gemini.
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Reddit
reddit.com › r/claudeai › introducing claude opus 4.5: our strongest model to date
r/ClaudeAI on Reddit: Introducing Claude Opus 4.5: our strongest model to date
November 24, 2025 -

Claude Opus 4.5 is a step forward in what AI systems can do, and a preview of changes in how work gets done.

It’s the best model in the world for coding, agents, and computer use. It’s also meaningfully better at everyday tasks like working with slides and spreadsheets. When we gave it our two-hour engineering assignment, it finished faster than any human ever has.

Claude Opus 4.5 is available today on our API and on all three major cloud platforms.

Learn more: https://www.anthropic.com/news/claude-opus-4-5

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CometAPI
cometapi.com › claude-opus-4-5-what-is-it-like-and-how-much
Claude Opus 4.5: what is it like — and how much will it cost? - CometAPI - All AI Models in One API
2 weeks ago - If/when Opus 4.5 ships, expect incremental but meaningful gains over Opus 4.1 in reasoning, coding reliability, and agent stability; expect pricing to stay within Opus’ premium slab (with similar input/output pricing and enterprise tiering), and expect the model to remain a high-investment choice for heavy output workloads. Developers can access Gemini 3 Pro Preview API and Claude Sonnet 4.5 API through CometAPI.
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AWS
aws.amazon.com › blogs › aws › introducing-claude-sonnet-4-5-in-amazon-bedrock-anthropics-most-intelligent-model-best-for-coding-and-complex-agents
Introducing Claude Sonnet 4.5 in Amazon Bedrock: Anthropic’s most intelligent model, best for coding and complex agents | Amazon Web Services
September 29, 2025 - Sonnet 4.5 features in the Amazon Bedrock API Here are some highlights of Sonnet 4.5 in the Amazon Bedrock API: Smart Context Window Management – The new API introduces intelligent handling when AI models reach their maximum capacity.