Compare / Gemini 3.1 Flash Lite Preview vs o4 Mini
Gemini 3.1 Flash Lite Preview vs o4 Mini
Which is cheaper, which is more capable, and which does better at each kind of work, from 16 results on 3 sources that measured both models.
Gemini 3.1 Flash Lite Preview or o4 Mini? The short answer
- Gemini 3.1 Flash Lite Preview is cheaper: $0.56 against $1.93 per million tokens, 3.4 times less.
- o4 Mini scores higher on the Artificial Analysis Intelligence Index: 16.7 against 15.6.
- On our business benchmarks, Gemini 3.1 Flash Lite Preview ranks higher for reasoning and knowledge, writing and sticking to the facts.
- On our business benchmarks, o4 Mini ranks higher for agents and tool use.
At a glance
| Gemini 3.1 Flash Lite Preview | o4 Mini | |
|---|---|---|
| Price per million tokens | $0.25 in · $1.50 out | $1.10 in · $4.40 out |
| Blended (3 in : 1 out) | $0.56 | $1.93 |
| Cheapest host, blended | $0.28 (Google AI Studio) | – |
| Intelligence Index | 15.6 | 16.7 |
| Spring Prompt overall | – | – |
| Output speed, tokens a second | – | – |
| Context window | 1,048,576 tokens | 200,000 tokens |
| Weights | Closed | Closed |
| Developer based in | the US | the US |
Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.
Which is better for what
Each model's rank among models available today, for each kind of work, from our own benchmarks and licensed sources. The better rank is in green.
| Use case | Gemini 3.1 Flash Lite Preview | o4 Mini |
|---|---|---|
| Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls | 93 of 161 | 46 of 161 |
| Reasoning and knowledgeHard questions across science, maths and general knowledge | 99 of 195 | 101 of 195 |
| WritingWhat people prefer in blind comparisons, and judged writing quality | 78 of 187 | 98 of 187 |
| Sticking to the factsSummarising without inventing things, and factual answers | 73 of 153 | 141 of 153 |
Every shared result
| Benchmark | Metric | Gemini 3.1 Flash Lite Preview | o4 Mini |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,433 | 1,368 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,421 | 1,379 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,413 | 1,337 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,443 | 1,408 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,407 | 1,369 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,433 | 1,391 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,420 | 1,354 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 15.6 | 16.7 |
| Artificial Analysisreported | GPQA Diamond% of questions | 82.2% | 78.4% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 17.2% | 16.5% |
| Artificial Analysisreported | IFBench% of instructions | 77.2% | 68.7% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 74.3% | 61.0% |
| Artificial Analysisreported | Terminal-Bench Hard% of tasks | 24.2% | 15.2% |
| Artificial Analysisreported | Τ²-bench telecom% of tasks | 31.3% | 55.6% |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 99.6% | 98.7% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 8.2% | 18.6% |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.
Quick answers
Is Gemini 3.1 Flash Lite Preview better than o4 Mini?
It depends on the task. Among models available today, on our benchmarks and licensed sources, Gemini 3.1 Flash Lite Preview ranks higher for reasoning and knowledge, writing and sticking to the facts; o4 Mini ranks higher for agents and tool use.
Which is cheaper, Gemini 3.1 Flash Lite Preview or o4 Mini?
Gemini 3.1 Flash Lite Preview costs $0.56 per million tokens (three input to one output), against $1.93 for o4 Mini.
Run Gemini 3.1 Flash Lite Preview and o4 Mini on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.