Claude Opus 4
LegacyWorld-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. The model supports vision/image input, a 200K context window.
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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.
Is Claude Opus 4 a reasoning model?
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No, Claude Opus 4 is not a reasoning model. It responds directly without an extended internal thinking step. For tasks requiring deep chain-of-thought reasoning, consider models like Claude, o-series from OpenAI, or Gemini Thinking.
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.