Comprehensive side-by-side LLM comparison
Claude Haiku 4.5 is available on 3 providers. Both models have their strengths depending on your specific coding needs.
Anthropic
Claude Haiku 4.5, released by Anthropic in October 2025, is a fast, efficient large language model from the Claude 4.5 family optimized for high-throughput, low-latency workloads. It features a 200K token context window, 64K maximum output tokens, native image understanding, and extended thinking capabilities. Haiku 4.5 targets latency-sensitive applications such as real-time assistants, document classification, and lightweight agentic tasks where rapid response times are a primary requirement.
OpenAI
GPT-5 Pro is an extended-reasoning variant from the GPT-5 family that applies more compute per response for deeper, more thorough answers on complex problems. It features the same 400K token context window and multimodal capabilities as GPT-5, with additional reasoning depth suited to research-grade analysis, advanced coding, and tasks requiring comprehensive, accurate outputs.
1 month newer

GPT-5 Pro
OpenAI
2025-08-07

Claude Haiku 4.5
Anthropic
2025-10-01
Context window and performance specifications
Claude Haiku 4.5
2025-02
Available providers and their performance metrics
Claude Haiku 4.5
Anthropic
AWS Bedrock
Google Cloud Vertex AI
GPT-5 Pro
Claude Haiku 4.5
GPT-5 Pro
Claude Haiku 4.5
GPT-5 Pro