Compare models
Put models side by side on price, context, capabilities, and benchmarks.
Solar Pro 4 is Upstage's next-generation flagship model, an agent-first successor to Solar Pro 3 focused on further reasoning gains at low cost. It targets multi-step tool use and production-scale agentic workloads while retaining Upstage's efficiency-focused, compact-parameter design philosophy.
Claude Haiku 4.5 is Anthropic's fast, affordable small model in the Claude 4 generation, balancing strong instruction-following and coding ability with low latency. It is designed for high-throughput agentic and chat applications where speed and cost efficiency are priorities.
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.