
OpenAI’s GPT-4.5, while a minor update, boasts improvements in reducing hallucinations and enhancing natural conversation. On the other hand, Anthropic’s Claude 3.7 Sonnet has garnered attention for its exceptional coding abilities and cost-effectiveness. Both models cater to a wide range of users, from developers and researchers to businesses seeking cutting-edge AI solutions.
As these models push the boundaries of what’s possible in AI, they’re reshaping expectations and applications across various industries, setting the stage for even more transformative advancements in the near future.
Key Features of GPT-4.5 and Claude 3.7 Sonnet
Both GPT-4.5 and Claude 3.7 Sonnet bring significant advancements to the AI landscape, each with its unique strengths. GPT-4.5, described as OpenAI’s “largest and most knowledgeable model yet,” focuses on expanding unsupervised learning to enhance word knowledge and intuition while reducing hallucinations. This model excels in improving reasoning capabilities and enhancing chat interactions with deeper contextual understanding.
On the other hand, Claude 3.7 Sonnet introduces a groundbreaking hybrid reasoning model, allowing for both quick responses and extended, step-by-step thinking. It particularly shines in coding and front-end web development, showcasing excellent instruction-following and general reasoning abilities.
Key Improvements:
- GPT-4.5: Enhanced unsupervised learning and conversational capabilities
- Claude 3.7 Sonnet: Advanced hybrid reasoning and superior coding prowess
- Both models: Improved multimodal capabilities and adaptive reasoning
Performance and Evaluation
Task | GPT-4.5 (vs 4o) | Claude 3.7 Sonnet* (vs 3.5) |
---|---|---|
Coding | Improved | Significantly outperforms |
Math | Moderate improvement | Better on AIME’24 problems |
Reasoning | Similar performance | Similar performance |
Multimodal | Similar performance | Similar performance |
* Without extended thinking
GPT-4.5 has shown notable improvements in chat interactions and reduced hallucinations. Human testers have evaluated it to be more accurate and factual compared to previous models, making it a more reliable conversational partner.
Claude 3.7 Sonnet, on the other hand, demonstrates exceptional efficiency in real-time applications and coding tasks. It has achieved state-of-the-art performance on SWE-bench Verified and TAU-bench, showcasing its prowess in software engineering and complex problem-solving. Additionally, its higher throughput compared to GPT-4.5 makes it particularly suitable for tasks requiring quick responses and processing large amounts of data.

Source: Anthropic
Pricing and Accessibility
GPT-4.5, while boasting impressive capabilities, comes with a hefty price tag. It’s priced 75 times higher than its predecessor, GPT-4, without clear justification for the substantial increase. This pricing strategy may limit its accessibility to many potential users.
In contrast, Claude 3.7 Sonnet offers a more affordable option. Its pricing structure is significantly more competitive:
- 25 times cheaper for input tokens compared to GPT-4.5
- 10 times cheaper for output tokens
- Specific pricing: $3 per million input tokens and $15 per million output tokens
Regarding availability, GPT-4.5 is currently accessible to GPT Pro users and developers via API, with plans to extend access to Plus users, educational institutions, and teams. Claude 3.7 Sonnet, however, offers broader accessibility across all Claude plans (Free, Pro, Team, Enterprise), as well as through the Anthropic API, Amazon Bedrock, and Google Cloud’s Vertex AI.
These differences in pricing and accessibility significantly impact the potential adoption and use cases for each model, with Claude 3.7 Sonnet potentially appealing to a wider range of users due to its cost-effectiveness and broader availability.
Use Cases
Both GPT-4.5 and Claude 3.7 Sonnet offer unique capabilities that cater to diverse real-world applications. GPT-4.5 excels as an advanced conversational partner, surpassing previous models in accuracy and reducing hallucinations. Its improved contextual understanding makes it ideal for customer service, content creation, and personalized learning experiences.
Claude 3.7 Sonnet, on the other hand, shines in the realm of coding and software development. Its agentic coding capabilities, demonstrated through Claude Code, automate tasks like searching code, running tests, and using command line tools. This makes it an invaluable asset for businesses looking to streamline their development processes.
Future Prospects and Conclusion
The release of GPT-4.5 and Claude 3.7 Sonnet marks a significant milestone in AI development, setting the stage for even more groundbreaking advancements. While GPT-4.5 is seen as a minor update, it lays the foundation for future models with enhanced reasoning capabilities. Claude 3.7 Sonnet, with its hybrid reasoning model, represents a dynamic shift in the AI landscape, potentially influencing the direction of future developments.
As these models continue to evolve, we can anticipate further improvements in unsupervised learning, reasoning capabilities, and task-specific optimizations. The complementary nature of unsupervised learning and reasoning suggests that future AI models will likely exhibit even more sophisticated problem-solving abilities.