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Claude Opus 4.5 vs GPT-4.1
Comprehensive side-by-side LLM comparison
Claude Opus 4.5 leads with 51.6% higher average benchmark score. GPT-4.1 offers 768.8K more tokens in context window than Claude Opus 4.5. GPT-4.1 is $20.00 cheaper per million tokens. Claude Opus 4.5 is available on 3 providers. Overall, Claude Opus 4.5 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4.5, released by Anthropic in November 2025, is a large language model from the Claude 4.5 family built for demanding reasoning tasks, advanced code generation, and complex agentic workflows. It features a 200K token context window, 64K maximum output tokens, native image understanding, and extended thinking with configurable effort levels. Opus 4.5 targets deep analytical work, multi-step tool orchestration, and applications requiring sustained reasoning across long, complex tasks.
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OpenAI
GPT-4.1, released by OpenAI in April 2025, is a large language model from the GPT-4 family optimized for coding, precise instruction following, and long-context tasks. It features a 1M token context window and native image understanding, with improved performance on tool-calling and web development benchmarks compared to GPT-4o. GPT-4.1 targets software development workflows, long-document analysis, and applications requiring accurate, instruction-adherent outputs.
6 months newer
GPT-4.1
OpenAI
2025-04-14
Claude Opus 4.5
Anthropic
2025-11-01
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.5
Input:$5.00
Output:$25.00
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GPT-4.1
Input:$2.00
Output:$8.00($20.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Claude Opus 4.5
Average Score:77.4%(+51.6%)
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GPT-4.1
Average Score:25.9%
Performance comparison across key benchmark categories
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Claude Opus 4.5
Science87.0%(+38.9%)
Agents67.8%(+64.2%)
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GPT-4.1
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.5
2025-05
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Opus 4.5
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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GPT-4.1
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Claude Opus 4.5
Avg Score:77.4%(+51.6%)
Providers:3
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GPT-4.1
Avg Score:25.9%
Providers:1