Comprehensive side-by-side LLM comparison
o3 leads with 21.0% higher average benchmark score. Overall, o3 is the stronger choice for coding tasks.
OpenAI
OpenAI o3, released by OpenAI in April 2025, is a large reasoning model that applies extended chain-of-thought processing to deliver improved performance on complex math, science, and coding tasks. It features a 200K token context window and native image understanding, with demonstrated strong results on mathematics and software engineering benchmarks. o3 targets demanding analytical and engineering tasks where deliberate, multi-step reasoning produces significantly better outcomes than direct generation.
Kunlun Tech
Skywork-R1V3-38B, released by Kunlun Tech's Skywork AI team on July 9, 2025, is a 38 billion parameter multimodal reasoning model built on InternVL-38B with reinforcement learning post-training that enhances both visual and textual reasoning. It uses the GRPO algorithm and cold-start fine-tuning to improve reasoning across image and text modalities. Skywork-R1V3-38B targets open-source multimodal reasoning deployments requiring strong performance across vision-language benchmarks.
2 months newer

o3
OpenAI
2025-04-16
Skywork-R1V3-38B
Kunlun Tech
2025-07-09
Context window and performance specifications
Average performance across 1 common benchmarks
o3
Skywork-R1V3-38B
Performance comparison across key benchmark categories
o3
Skywork-R1V3-38B
Available providers and their performance metrics
o3
OpenAI
Skywork-R1V3-38B
o3
Skywork-R1V3-38B
o3
Skywork-R1V3-38B