GPT-4 Turbo vs GPT-4o
Head-to-head specifications
| Metric | GPT-4 Turbo | GPT-4o | Difference |
|---|---|---|---|
| MMLU (general capability) | 86.5% | 88.7% | -2.2% |
| Context window | 128K tokens | 128K tokens | — |
| Price (input / output per 1M) | $10 / $30 | $2.5 / $10 | — |
| Access | Proprietary API | Proprietary API | — |
- GPT-4o leads general capability (MMLU 88.7% vs 86.5%).
Verdict: GPT-4 Turbo or GPT-4o?
GPT-4 Turbo advantages
- No decisive advantage on the tracked metrics.
GPT-4o advantages
- Input cost (+75%)
- Output cost (+67%)
Which should you choose?
- Choose the GPT-4o if you process large volumes of input and want the lowest cost.
Value for money
GPT-4o offers more capability per dollar — a better value pick for high-volume use, delivering 3.28× the MMLU-per-cost of the alternative.
GPT-4 Turbo vs GPT-4o: which should you choose?
GPT-4 Turbo — OpenAI large language model (2023) with a 128K-token context window and an MMLU score of 86.5%.
GPT-4o — OpenAI large language model (2024) with a 128K-token context window and an MMLU score of 88.7%.
GPT-4 Turbo vs GPT-4o: GPT-4o scores higher on the MMLU benchmark. GPT-4o leads general capability (MMLU 88.7% vs 86.5%).
Capability and reasoning
On MMLU — a 57-subject benchmark of general knowledge and reasoning — the GPT-4o scores 88.7% versus 86.5%. MMLU is a useful proxy for raw knowledge but does not capture instruction-following, coding, tool use, latency or safety, so treat it as one signal among several.
Context window
The GPT-4 Turbo handles up to 128K tokens per request, which sets how much documentation, transcript or code it can reason over at once — decisive for retrieval-augmented and long-document workflows.
Pricing and access
GPT-4 Turbo is proprietary api and GPT-4o is proprietary api. Proprietary models bill per token via API; open-weight models can be self-hosted, trading per-call cost for infrastructure you manage. For production, weigh throughput, rate limits and data-residency needs alongside headline price.
The verdict
Both are credible choices in the ai model comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the GPT-4 Turbo better than the GPT-4o?
GPT-4o is the clearly stronger overall choice, winning most of the dimensions that matter. GPT-4o leads general capability (MMLU 88.7% vs 86.5%).
What is the main difference between the GPT-4 Turbo and the GPT-4o?
GPT-4o leads general capability (MMLU 88.7% vs 86.5%).
Which is better value?
GPT-4o offers more capability per dollar — a better value pick for high-volume use, delivering 3.28× the MMLU-per-cost of the alternative.
Which should I choose?
Choose the GPT-4o if you process large volumes of input and want the lowest cost.
Methodology
Large language models are compared on the MMLU benchmark (a widely-cited 57-subject test of general knowledge and reasoning, reported as a percentage), maximum context window, and published API pricing per million input and output tokens. Open-weight models can also be self-hosted. Benchmarks capture only part of real-world quality, which also depends on tool use, latency, safety and task fit.