Gemini 2.5 Flash Lite vs GPT-4.1
Wins 2 of 7 areas
Facts · Following instructions
Wins 4 of 7 areas
Coding · Agents · Images and charts · Long documents
GPT-4.1 wins more areas, narrowly.Gemini 2.5 Flash Lite is cheaper and better at facts.
Scores updated · 30 tests both models report · How we compare
Where each one wins
Tests won in each of the seven areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software03GPT-4.13 of 3 tests
- Images and chartsUnderstanding pictures, charts and video02GPT-4.12 of 2 tests
- AgentsCarrying out multi-step tasks on its own01GPT-4.11 of 1 test
- Long documentsFinding answers in very long texts01GPT-4.11 of 1 test
- FactsGetting facts right instead of making them up21Gemini 2.5 Flash Lite2 of 3 tests
- Following instructionsDoing exactly what it is asked10Gemini 2.5 Flash Lite1 of 1 test
- ReasoningHard problems that need careful thinking11Even1 each · 1 tie
Agents, long documents and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Gemini 2.5 Flash Lite costs 95% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where GPT-4.1 pulls ahead
- Fixes real GitHub issues in Python projectsSWE-bench Verified+23points ahead
- Code for real scientific research problemsSciCode+18.8points ahead
- Reasons across sets of long documentsAA-LCR+12.6points ahead
Where Gemini 2.5 Flash Lite pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+15.9points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+6.9points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+2.6points ahead
Every test, side by side
All 30 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-4.1
- SWE-bench VerifiedGPT-4.1 by 2331.654.6+23
- SciCodeGPT-4.1 by 18.819.338.1+18.8
- Terminal-Bench HardGPT-4.1 by 9.14.513.6+9.1
ReasoningEven
- GPQA DiamondGPT-4.1 by 4.162.566.6+4.1
- Humanity's Last ExamGemini 2.5 Flash Lite by 2.66.84.2+2.6
- CritPttie00tie
FactsGemini 2.5 Flash Lite
- AA-Omniscience · Non-hallucinationGemini 2.5 Flash Lite by 15.922.66.7+15.9
- AA-Omniscience · AccuracyGPT-4.1 by 9.917.927.8+9.9
- Vectara HHEM hallucination ratelower is betterGemini 2.5 Flash Lite by 2.33.35.6+2.3
Images and chartsGPT-4.1
Following instructionsGemini 2.5 Flash Lite
- IFBenchGemini 2.5 Flash Lite by 6.949.943+6.9
Other results16 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- τ²-Bench Telecom (AA run)GPT-4.1 by 28.718.447.1+28.7
- Aider-PolyglotGPT-4.1 by 24.926.751.6+24.9
- HarmBenchGPT-4.1 by 24.76791.7+24.7
- AA Agentic IndexGPT-4.1 by 21.26.127.3+21.2
- Artificial Analysis Coding IndexGPT-4.1 by 12.39.521.8+12.3
- AA-OmniscienceGPT-4.1 by 6-45.6-39.6+6
- AA IntelligenceGPT-4.1 by 4.28.512.7+4.2
- vectara_avg_summary_lengthGemini 2.5 Flash Lite by 495.791.7+4
- simple_safety_testsGPT-4.1 by 3.596.5100+3.5
- AIME 2025Gemini 2.5 Flash Lite by 3.449.846.4+3.4
- bbqGemini 2.5 Flash Lite by 2.394.992.6+2.3
- vectara_factual_consistencyGemini 2.5 Flash Lite by 2.396.794.4+2.3
- AIR-Bench 2024Gemini 2.5 Flash Lite by 165.864.8+1
- anthropic_red_teamtie98.799.3tie
- vectara_answer_ratetie99.599.9tie
- XSTesttie97.897.9tie
Questions people ask
Which is better, Gemini 2.5 Flash Lite or GPT-4.1?
GPT-4.1 wins four of the seven areas where both have results: coding, agents, images and charts and long documents. Gemini 2.5 Flash Lite wins facts and following instructions, and costs 95% less. They are level on reasoning.
Which is better for coding?
GPT-4.1. It wins 3 of the 3 coding tests both models report; Gemini 2.5 Flash Lite wins none.
Which is cheaper?
Gemini 2.5 Flash Lite costs $0.10 per million input tokens and $0.40 per million output tokens; GPT-4.1 costs $2.00 and $8.00. That makes Gemini 2.5 Flash Lite about 95% cheaper for the same work.
How do you compare the two?
We use the 30 benchmark tests both models have published scores on. The verdict counts the 14 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 16 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.