Claude Opus 4
LegacyTop-tierWorld-class coding model with sustained performance on complex agentic tasks.
Sets new benchmarks in software engineering and long-horizon workflows. Predecessor to Claude Opus 4.5.
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Claude Opus 4 by Anthropic has a Capability Index of 75.4, making it comparable to the field average. It ranks #40 out of 92 models on the idapt capability leaderboard. It resolves 71% of SWE-bench Verified coding tasks. Claude Opus 4 is very affordable at $15.00/M tokens input and $75.00/M tokens output. Cached input reads are priced at $1.50/M tokens, making repeated context cheaper. The model supports vision/image input, extended reasoning, a 200K context window.
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Mistral Small 4vs Claude Opus 4Frequently Asked Questions about Claude Opus 4▼
When was Claude Opus 4 released?
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Claude Opus 4 was released on May 22, 2025.
Who created Claude Opus 4?
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Claude Opus 4 was created by Anthropic.
How capable is Claude Opus 4?
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Claude Opus 4 has a Capability Index of 75.4/100, making it comparable to the field average. It ranks #40 out of 92 models.
How much does Claude Opus 4 cost?
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Claude Opus 4 costs $15.00/M input tokens and $75.00/M output tokens.
What is Claude Opus 4 API pricing?
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The Claude Opus 4 API is priced at $15.00 per million input tokens and $75.00 per million output tokens. You can access Claude Opus 4 through idapt.app alongside 200+ other AI models in one workspace.
Is Claude Opus 4 a reasoning model?
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Yes, Claude Opus 4 is a reasoning model. It can think step-by-step through complex problems before providing an answer, often yielding better results on difficult tasks like math, coding, and multi-step logic.
Does Claude Opus 4 support image or vision input?
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Yes, Claude Opus 4 supports vision/image input. You can share images in your conversation and the model will analyze and respond based on their content.
Does Claude Opus 4 support audio?
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No, Claude Opus 4 does not support audio input.
What is the context window of Claude Opus 4?
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Claude Opus 4 has a context window of 200K tokens, meaning it can process approximately 150,000 words of context at once.
Is Claude Opus 4 open source?
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Claude Opus 4 is a proprietary model developed by Anthropic. The model weights and training data are not publicly available.
How does Claude Opus 4 perform on coding?
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Claude Opus 4 resolves 71% of SWE-bench Verified tasks — real GitHub issues fixed end-to-end, the strongest single signal for agentic software engineering.
What is Claude Opus 4 good at?
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Based on benchmark data, Claude Opus 4 excels at: software development and coding tasks, visual analysis and image understanding. It is Anthropic's capable model suitable for a wide range of tasks.
Where can I use Claude Opus 4?
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You can chat with Claude Opus 4 on idapt.app — no separate API key required. idapt is an AI workspace with 200+ models, agents, computers, and tasks. You can also access Claude Opus 4 through Anthropic's own API or platform.