Gemma 3 vs GPT-5
2026 - Pricing, benchmarks, and use case comparison
Quick take
- •Gemma 3 is open-weights - free to self-host with no API costs. GPT-5 requires paid API access.
- •Gemma 3 is open-source: fine-tune it, self-host it, or use any inference provider. GPT-5 is closed-source.
Specs comparison
| Gemma 3 | GPT-5 | |
|---|---|---|
| Provider | Google DeepMind | OpenAI |
| Type | Open source | Closed source |
| Context window | 128K | 128K |
| Input / 1M tokens | ✓Free (self-host) | $10.00 |
| Output / 1M tokens | Free (self-host) | $30.00 |
| Release date | 2025-03 | 2025-06 |
Benchmarks
| Benchmark | Gemma 3 | GPT-5 |
|---|---|---|
| MMLU | ~76% | - |
Scores sourced from official provider release posts.
Strengths
Gemma 3
- ✓Runs on consumer hardware (4B and 12B variants)
- ✓Multimodal input support
- ✓Strong benchmark performance relative to size
- ✓Tight Keras and JAX integration
- ✓Good instruction following out of the box
GPT-5
- ✓Strong general-purpose reasoning
- ✓Excellent multimodal understanding
- ✓Broad domain knowledge
- ✓Consistent instruction following
- ✓Widely supported by third-party tools
Which should you choose?
Choose Gemma 3 if you need...
- →On-device and edge inference
- →Low-resource environments
- →Prototyping with free Google AI Studio access
- →Researchers benchmarking small models
Choose GPT-5 if you need...
- →General-purpose API integrations
- →Multimodal applications
- →Complex reasoning tasks
- →Enterprise deployments