Best GPT-5.1-Codex alternatives
Users seek alternatives to GPT-5.1-Codex primarily due to its $10 per 1M token price and restriction to text and image inputs only. This list covers seven other multimodal models offering different combinations of intelligence index, speed, cost, and context length.
Anthropic's Claude Sonnet 4.6 excels at long-context multimodal analysis.
Anthropic's closed multimodal model with a million-token context window.
Google's multimodal preview model with custom tools and massive context handling.
GPT-5.2 Pro handles images, text, and files over a 400000 context at a much higher $168 per 1M price, with unspecified intelligence_index and speed.
Multimodal coding model with 400k-token context from OpenAI.
GPT-5 Codex achieves a higher intelligence_index of 44.6 with the same $10 per 1M price and 400000 context, while maintaining strong coding specialization and unified text-image reasoning.
Google's fast multimodal model for unified text, image, audio, and video tasks.
Claude Sonnet 4 handles complex multimodal tasks with a million-token context.
Frequently asked questions
GPT-5 Codex is the strongest alternative by intelligence_index at 44.6 while matching the original price and context size.