Model comparison
Gemini 3 Deep Think vs GPT-5.3 Chat
GPT-5.3 Chat has enough public results to be ranked (#109); Gemini 3 Deep Think does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
GoogleSummary
- The widest gap is in reasoning, where Gemini 3 Deep Think leads 70.2 to 28.5.
Side by side
| Gemini 3 Deep Think | GPT-5.3 Chat | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 58.3 | 42.8 |
| Released | 2026-02-12 | 2026-03-03 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 16K |
| Input $ / M tokens | — | $1.75 |
| Output $ / M tokens | — | $14 |
| Results tracked | 3 | 18 |
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Category by category
Coding Not comparable
Gemini 3 Deep Think: —, GPT-5.3 Chat: 41.4 (#124)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| LMArena Coding | — | 1408 |
Reasoning Gemini 3 Deep Think leads
Gemini 3 Deep Think: 70.2 (#14), GPT-5.3 Chat: 28.5 (#102)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| ARC-AGI-1 | 96% | — |
| CritPt | 25.7% | — |
| LMArena Hard Prompts | — | 1399 |
Math Not comparable
Gemini 3 Deep Think: —, GPT-5.3 Chat: 38.2 (#142)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| LMArena Math | — | 1389 |
Knowledge Not comparable
Gemini 3 Deep Think: —, GPT-5.3 Chat: 38.8 (#140)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| LMArena Expert | — | 1397 |
Multilingual Not comparable
Gemini 3 Deep Think: —, GPT-5.3 Chat: 50.3 (#124)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| LMArena Non-English | — | 1382 |
| LMArena Chinese | — | 1432 |
| LMArena French | — | 1397 |
| LMArena German | — | 1384 |
| LMArena Japanese | — | 1352 |
| LMArena Korean | — | 1346 |
| LMArena Russian | — | 1400 |
| LMArena Spanish | — | 1371 |
Instruction Following Not comparable
Gemini 3 Deep Think: —, GPT-5.3 Chat: 72.8 (#129)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| LMArena Instruction Following | — | 1378 |
Long Context Not comparable
Gemini 3 Deep Think: —, GPT-5.3 Chat: 42.6 (#120)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| LMArena Longer Query | — | 1396 |
Writing & Preference Not comparable
Gemini 3 Deep Think: —, GPT-5.3 Chat: 63.1 (#68)
| Benchmark | Gemini 3 Deep Think | GPT-5.3 Chat |
|---|---|---|
| LMArena Text | — | 1389 |
| LMArena Creative Writing | — | 1355 |
| EQ-Bench Creative Writing | — | 1690 |
| LMArena Multi-Turn | — | 1412 |
Frequently asked questions
Is Gemini 3 Deep Think better than GPT-5.3 Chat?
GPT-5.3 Chat has enough public results to be ranked (#109); Gemini 3 Deep Think does not yet, so treat this comparison as directional.
How many benchmarks do Gemini 3 Deep Think and GPT-5.3 Chat share?
0 benchmarks have published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and GPT-5.3 Chat has 18.