One of the best models for coding and complex instruction-following, but its premium pricing demands premium use cases.
Complex coding tasks, multi-step reasoning, and long-document analysis where GPT-4o-class quality is needed without paying for the absolute top tier.
Exceptional instruction-following and task fidelity — one of the best in class for following nuanced, multi-part prompts
Strong software engineering performance, including agentic coding workflows and debugging complex codebases
200K context window handles long codebases, legal documents, or research corpora in a single pass
Reliable and safe output with Anthropic's constitutional AI alignment, reducing hallucinations on factual tasks
At $6/$30 per million tokens, it's expensive compared to GPT-4o Mini or Gemini 1.5 Flash for high-volume use cases
See what Anthropic: Claude 3.5 Sonnet actually costs at your usage level
Based on Anthropic: Claude 3.5 Sonnet API pricing: $6/1M input · $30/1M output. Real costs vary by provider discounts and caching. Check the provider for exact current rates.
Price History
→0% since May 9
4 data points · tracked daily since May 9, 2026
Complex coding tasks, multi-step reasoning, and long-document analysis where GPT-4o-class quality is needed without paying for the absolute top tier.. Start free — no card required.
Recommendations are made independently based on real-world use and public benchmarks. See our disclosures for details.
Similar models worth checking before you commit.
Claude Opus 4 is Anthropic's most capable flagship model, designed for complex reasoning, nuanced writing, and sophisticated multi-step tasks. It sits at the top of the Claude 4 family, prioritizing depth and quality over speed.
Pricing moves, ranking shifts, and capability updates.
Anthropic: Claude 3.5 Sonnet (Anthropic) is now indexed. One of the best models for coding and complex instruction-following, but its premium pricing demands premium use cases.
View modelAnthropic: Claude 3.5 Sonnet is best for complex coding tasks, multi-step reasoning, and long-document analysis where gpt-4o-class quality is needed without paying for the absolute top tier.. It is a strong fit when that workflow matters more than the tradeoffs around premium pricing and balanced speed.
You're processing high-volume, cost-sensitive workloads or need image generation — cheaper alternatives like GPT-4o Mini or Claude 3 Haiku deliver far better economics.
Meta: Llama 3.1 8B Instruct is the lower-cost option to compare first when you want a similar workflow fit with less token spend.
Anthropic: Claude Opus 4 is the better pick when response time matters more than maximum depth or premium quality.
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You're processing high-volume, cost-sensitive workloads or need image generation — cheaper alternatives like GPT-4o Mini or Claude 3 Haiku deliver far better economics.
No native image generation capability — multimodal support is input-only (vision)
Can be overly cautious on borderline creative or sensitive requests compared to GPT-4o
Claude Opus 4.1 is Anthropic's top-tier flagship model, designed for the most demanding tasks requiring deep reasoning, nuanced writing, and complex multi-step analysis. It sits at the apex of the Claude 4 family, prioritizing capability over cost and speed.
Claude Opus 4.5 is Anthropic's flagship reasoning and writing model, offering deep analytical capability and nuanced instruction-following across a 200K context window. It sits at the top of the Claude 4 lineup, prioritizing quality over speed.
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