We break down the two most popular frontier models across eight key dimensions. Want to see how they perform on your own prompts? Try LLMWise Compare mode to run them side-by-side in a single API call.
| Dimension | GPT-5.2 | Claude Sonnet 4.5 | Edge |
|---|---|---|---|
| Coding | GPT-5.2 generates clean, working code across many languages and excels at boilerplate-heavy tasks like REST APIs and CRUD apps. | Claude Sonnet 4.5 consistently produces more idiomatic code, catches edge cases other models miss, and handles complex refactoring with fewer iterations. | |
| Creative Writing | GPT-5.2 shines at creative prose, storytelling, and copywriting with a natural, varied voice that rarely feels robotic. | Claude Sonnet 4.5 writes well-structured long-form content and is particularly strong at maintaining tone consistency, though its style can lean formal. | |
| Math & Reasoning | GPT-5.2 handles multi-step math and logical puzzles competently, occasionally stumbling on problems that require careful symbolic manipulation. | Claude Sonnet 4.5 demonstrates strong chain-of-thought reasoning and is more reliable on graduate-level math and formal logic problems. | |
| Speed | GPT-5.2 delivers tokens at a competitive rate with low time-to-first-token, making it feel responsive for interactive use. | Claude Sonnet 4.5 is slightly slower on average, especially on longer outputs, though the gap has narrowed significantly in recent updates. | |
| Cost | GPT-5.2 pricing sits in the premium tier. High-volume users will notice the cost, particularly on long-context prompts. | Claude Sonnet 4.5 is priced similarly to GPT-5.2, with comparable per-token rates. Neither model offers a significant cost advantage. | tie |
| Context Window | GPT-5.2 supports a large context window and handles multi-document summarization well, though recall degrades in the middle of very long inputs. | Claude Sonnet 4.5 supports up to 200K tokens and is notably better at retrieving information from deep within long contexts without losing fidelity. | |
| Safety & Alignment | GPT-5.2 has mature safety filters and content policies, though it can occasionally be overly cautious on benign prompts. | Claude Sonnet 4.5 is widely regarded as the most safety-conscious frontier model, with nuanced refusals and strong adherence to system instructions. | |
| Function Calling | GPT-5.2 has best-in-class structured output and tool-use capabilities, with reliable JSON schema adherence and parallel function calls. | Claude Sonnet 4.5 supports tool use well, but GPT-5.2's function-calling ecosystem is more mature with better documentation and wider SDK support. |
Claude Sonnet 4.5 edges ahead on coding, reasoning, long-context tasks, and safety. GPT-5.2 wins on creative writing, speed, and function calling. For most developers, Claude is the stronger general-purpose choice, but GPT-5.2 remains the go-to for tool-use-heavy workflows and creative applications.
Use LLMWise Compare mode to test both models on your own prompts in one API call.
500 free credits. One API key. Nine models. No credit card required.