Model comparison

GPT-5 Codex vs grok-4-1-fast-non-reasoning

Compare GPT-5 Codex (OpenAI) and grok-4-1-fast-non-reasoning (X Ai) by price, context, capabilities, and latency.

Which should you pick?

  • Price: grok-4-1-fast-non-reasoning is cheaper ($0.2 / 1M tokens input / $0.5 / 1M tokens output) vs GPT-5 Codex ($1.25 / 1M tokens input / $10 / 1M tokens output).
  • Context: grok-4-1-fast-non-reasoning has the larger context window (2M tokens).

Side by side

GPT-5 Codex vs grok-4-1-fast-non-reasoning — full comparison

Compare price, provider, context, capabilities, latency, and source basis.

ModelProviderInputOutputContextCapabilitiesBest forLatencyStatusSource
GPT-5 Codexopenai/gpt-5-codexOpenAI$1.25 / 1M tokens$10 / 1M tokens400k
Streaming
General chat via OpenAI, API workloads1780-3306msCatalogPlatform curated
grok-4-1-fast-non-reasoningx-ai/grok-4.1-fast-non-reasoningX Ai$0.2 / 1M tokens$0.5 / 1M tokens2M
Streaming
General chat via X Ai, API workloads743-3203msCatalogPlatform curated

FAQ

GPT-5 Codex vs grok-4-1-fast-non-reasoning FAQ

Is GPT-5 Codex or grok-4-1-fast-non-reasoning cheaper?

grok-4-1-fast-non-reasoning is cheaper ($0.2 / 1M tokens input / $0.5 / 1M tokens output) vs GPT-5 Codex ($1.25 / 1M tokens input / $10 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, GPT-5 Codex or grok-4-1-fast-non-reasoning?

grok-4-1-fast-non-reasoning is larger (2M tokens) vs 400k tokens.

GPT-5 Codex vs grok-4-1-fast-non-reasoning for High quality: which should I pick?

Both target High quality. Pick grok-4-1-fast-non-reasoning to optimize cost, or grok-4-1-fast-non-reasoning for the longer context window. Test both on real prompts before committing production traffic.