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GPT-5.3-Codex vs MiMo-V2.5-Pro: side-by-side summary

GPT-5.3-Codex and MiMo-V2.5-Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.3-Codex, from OpenAI, has a 400,000-token context window and is priced at $1.75/M tokens input, $14/M tokens output on OpenRouter.

MiMo-V2.5-Pro, from Xiaomi, has a 1,050,000-token context window and is priced at $0.3045/M tokens input, $0.609/M tokens output on OpenRouter.

Context window
  • GPT-5.3-Codex: 400,000 tokens
  • MiMo-V2.5-Pro: 1,050,000 tokens
Price
  • GPT-5.3-Codex: $1.75/M tokens input, $14/M tokens output
  • MiMo-V2.5-Pro: $0.3045/M tokens input, $0.609/M tokens output
Provided by
  • GPT-5.3-Codex: OpenAI
  • MiMo-V2.5-Pro: Xiaomi
  • GPT-5.3-Codex model details, providers and pricing
  • MiMo-V2.5-Pro model details, providers and pricing