Model comparison
Chatgpt 4o Latest 20250326 vs Gemini 2.5 Flash
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 39.3 on the Noometry Index.
Last verified . 21 shared benchmarks.
GoogleSummary
- They share 21 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 5 categories and Gemini 2.5 Flash in 4 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 33.8 to 18.1.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 56.8% for Gemini 2.5 Flash.
Side by side
| Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 43.8 | 39.3 |
| Released | — | 2025-04-17 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 21 | 54 |
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Category by category
Coding Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 41.6 (#122), Gemini 2.5 Flash: 35.8 (#220)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| LMArena Coding | 1413 | 1424 |
| SWE-bench Verified (bash only) | — | 28.7% |
| Aider Polyglot | — | 55.1% |
| WeirdML | — | 41.9% |
| ALE-Bench | — | 661.88 |
Agentic & Tool Use Not comparable
Chatgpt 4o Latest 20250326: —, Gemini 2.5 Flash: 30.8 (#74)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| Terminal-Bench | — | 17.1% |
| Berkeley Function Calling Leaderboard | — | 56.2% |
| TheAgentCompany | — | 41.1% |
| BALROG | — | 33.5% |
| Vending-Bench 2 | — | 548.84 |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Gemini 2.5 Flash: 18.1 (#286)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| Kagi LLM Benchmark | 75% | 56.8% |
| LMArena Hard Prompts | 1424 | 1422 |
| ARC-AGI-2 | — | 2.5% |
| SimpleBench | — | 41.2% |
| ARC-AGI-1 | — | 33.3% |
| CritPt | — | 1.1% |
| EnigmaEval | — | 2.7% |
| DTBench | — | 76.5% |
| LMCA | — | 27.5% |
| Epoch Capabilities Index | — | 143.03 |
| ForecastBench | — | 60.6 |
Math Gemini 2.5 Flash leads
Chatgpt 4o Latest 20250326: 38.6 (#134), Gemini 2.5 Flash: 39.9 (#98)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| LMArena Math | 1407 | 1415 |
| OTIS Mock AIME 2024-2025 | — | 73.1% |
| Omni-MATH | — | 38.5% |
| FrontierMath (Feb 2025 set) | — | 4.8% |
| FrontierMath Tier 4 (v1) | — | 4.2% |
Knowledge Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 39.2 (#137), Gemini 2.5 Flash: 36.4 (#168)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| Confabulations | 16.6% | 16.8% |
| LMArena Expert | 1401 | 1426 |
| Humanity's Last Exam | — | 12.1% |
| MMLU-Pro | — | 63.9% |
| Vectara Hallucination Rate | — | 7.8% |
| GPQA (HELM) | — | 39% |
Multimodal Gemini 2.5 Flash leads
Chatgpt 4o Latest 20250326: 39.6 (#58), Gemini 2.5 Flash: 41.8 (#32)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| LMArena Vision | 1243 | 1253 |
| GeoBench | — | 76% |
| VPCT | — | 46.2% |
| SpatialViz-Bench | — | 36.9% |
Multilingual Too close to call
Chatgpt 4o Latest 20250326: 52.9 (#76), Gemini 2.5 Flash: 52.3 (#88)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| LMArena Non-English | 1419 | 1409 |
| LMArena Chinese | 1457 | 1450 |
| LMArena French | 1446 | 1433 |
| LMArena German | 1423 | 1418 |
| LMArena Japanese | 1405 | 1405 |
| LMArena Korean | 1396 | 1385 |
| LMArena Russian | 1429 | 1415 |
| LMArena Spanish | 1434 | 1421 |
Instruction Following Gemini 2.5 Flash leads
Chatgpt 4o Latest 20250326: 74.0 (#107), Gemini 2.5 Flash: 75.7 (#54)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1403 | 1405 |
| IFEval | — | 89.8% |
Long Context Gemini 2.5 Flash leads
Chatgpt 4o Latest 20250326: 43.1 (#107), Gemini 2.5 Flash: 47.5 (#17)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| LMArena Longer Query | 1413 | 1419 |
| Fiction.LiveBench | — | 77.8% |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.6 (#72), Gemini 2.5 Flash: 53.8 (#157)
| Benchmark | Chatgpt 4o Latest 20250326 | Gemini 2.5 Flash |
|---|---|---|
| LMArena Text | 1429 | 1417 |
| LMArena Creative Writing | 1405 | 1400 |
| EQ-Bench Creative Writing | 1501 | 1137 |
| LMArena Multi-Turn | 1454 | 1408 |
| Short-Story Creative Writing | — | 76.5% |
| WildBench | — | 81.7% |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Gemini 2.5 Flash?
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 39.3 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Gemini 2.5 Flash better for coding?
Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.6 versus 35.8 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Gemini 2.5 Flash share?
21 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Gemini 2.5 Flash has 54.