All comparisons
Massive Multitask Language Understanding 86.5 — Chatbot Arena 1242.0 — MMLU PRO 69.4 88.9 Massive Multi-discipline Multimodal Understanding — 80.7 BFCL — 77.5 SWE-bench Pro — 41.8
GPT-4 Turbo vs Claude Opus 4.5
Side-by-side comparison of specifications, capabilities, and pricing.
| Released | 2024-04-09 | 2025-11-01 |
| Context window | 128K | 200K |
| Parameters | 1.76T (8x222B MoE)* | — |
| Architecture | mixture of experts | decoder only |
| License | Proprietary | Proprietary |
| Knowledge cutoff | 2023-12 | 2025-12 |
Capabilities | ||
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured Outputs | ||
| Code execution | ||
Availability | ||
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Benchmarks