Anthropic: Claude Opus 4Model25/100 via “multi-turn conversation with persistent context and instruction refinement”
Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...
Unique: Opus 4's multi-turn capability requires explicit client-side history management rather than implicit server-side sessions, giving developers full control over context composition and enabling custom summarization strategies, but requiring more implementation work than competitors with built-in session management
vs others: Provides more flexible context control than ChatGPT API because developers can selectively include/exclude prior turns and customize system prompts per turn, enabling advanced patterns like context pruning and dynamic instruction injection