Comprehensive side-by-side LLM comparison
GPT-4.1 mini offers 768.6K more tokens in context window than Kimi K2.5. GPT-4.1 mini is $5.50 cheaper per million tokens. GPT-4.1 mini supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
OpenAI
GPT-4.1 mini, released by OpenAI in April 2025, is a smaller variant from the GPT-4.1 family designed for efficient, cost-effective deployments requiring long-context understanding. It features a 1M token context window and native image understanding, with maintained coding and instruction-following capabilities relative to its size. GPT-4.1 mini targets applications needing a balance between response speed, cost, and capability, such as production APIs with high request volumes.
Moonshot AI
Kimi K2.5, released by Moonshot AI in January 2026, is an updated Mixture-of-Experts large language model with 1 trillion total parameters and 32 billion active parameters. It builds on Kimi K2 with improved coding performance across multiple languages and an expanded context window. Kimi K2.5 targets agentic development workflows, polyglot code generation, and open-source deployments requiring large-scale MoE reasoning.
8 months newer

GPT-4.1 mini
OpenAI
2025-04-14
Kimi K2.5
Moonshot AI
2026-01
Cost per million tokens (USD)
GPT-4.1 mini
Kimi K2.5
Context window and performance specifications
Available providers and their performance metrics
GPT-4.1 mini
OpenAI
Kimi K2.5
GPT-4.1 mini
Kimi K2.5
GPT-4.1 mini
Kimi K2.5
Moonshot AI