xAI: Grok 4.1 Fast alternatives
Ranked by capability overlap, similar context window, and similar price tier. Cross-vendor options are weighted higher than same-provider alternatives.
See also: xAI: Grok 4.1 Fast model details · Grok 4 family · X Ai provider page
Top 15 alternatives
| # | Model | Provider | Why | Context | Input price / 1M | Compare |
|---|---|---|---|---|---|---|
| 1 | Google: Gemini 2.5 Flash | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.30 Budget | vs → | |
| 2 | Google: Gemini 2.5 Flash (batch) | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.15 Budget | vs → | |
| 3 | Google: Gemini 2.5 Flash Lite | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.10 Budget | vs → | |
| 4 | Google: Gemini 2.5 Flash Lite (batch) | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.05 Budget | vs → | |
| 5 | Google: Gemini 2.5 Flash Lite Preview 09-2025 | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.10 Budget | vs → | |
| 6 | Google: Gemini 3 Flash Preview (batch) | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.25 Budget | vs → | |
| 7 | Google: Gemini 3.1 Flash Lite | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.25 Budget | vs → | |
| 8 | Google: Gemini 3.1 Flash Lite (batch) | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.13 Budget | vs → | |
| 9 | Google: Gemini 3.1 Flash Lite Preview | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.25 Budget | vs → | |
| 10 | Google: Gemini 3.5 Flash Lite | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.30 Budget | vs → | |
| 11 | Google: Gemini 3.5 Flash Lite (batch) | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.0M Ultra context (1M+) | $0.15 Budget | vs → | |
| 12 | OpenAI: GPT-5.6 Luna | OpenAI | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.1M Ultra context (1M+) | $0.10 Budget | vs → |
| 13 | OpenAI: GPT-5.6 Luna (batch) | OpenAI | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.1M Ultra context (1M+) | $0.10 Budget | vs → |
| 14 | OpenAI: GPT-5.6 Luna Pro | OpenAI | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.1M Ultra context (1M+) | $0.10 Budget | vs → |
| 15 | OpenAI: GPT-5.6 Luna Pro (batch) | OpenAI | shares reasoning, tool-use, structured-output, vision · similar price tier | 1.1M Ultra context (1M+) | $0.10 Budget | vs → |
Cheaper alternatives to xAI: Grok 4.1 Fast
Google: Gemini 2.5 Flash (batch) — $0.15Google: Gemini 2.5 Flash Lite — $0.10Google: Gemini 2.5 Flash Lite (batch) — $0.05Google: Gemini 2.5 Flash Lite Preview 09-2025 — $0.10Google: Gemini 3.1 Flash Lite (batch) — $0.13Google: Gemini 3.5 Flash Lite (batch) — $0.15OpenAI: GPT-5.6 Luna — $0.10OpenAI: GPT-5.6 Luna (batch) — $0.10