GPT-4o vs GPT-5 nano
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
GPT-4o
OpenAI · May 2024
The 2024 omni-modal classic with native audio in and out; superseded at the frontier but still everywhere in production.
GPT-5 nano
OpenAI · Aug 2025
OpenAI's cheapest model — $0.05 per million input tokens — for latency-critical routing, autocomplete and bulk tagging.
The verdict
These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. On price the gap is dramatic: GPT-5 nano works out roughly 32x cheaper per blended million tokens. GPT-5 nano also takes 400K of context versus 128K for GPT-4o.
Specs & pricing
| GPT-4o | GPT-5 nano | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $2.5 | $0.05 |
| Output price / 1M | $10 | $0.4 |
| Context window | 128K | 400K |
| Max output | 16K | 128K |
| Open weights | no | no |
| Reasoning model | no | yes |
| Multimodal input | text, image, audio | text, image |
| Knowledge cutoff | Oct 2023 | May 2024 |
| Released | May 2024 | Aug 2025 |
| Example monthly cost* | $40.00 | $1.10 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, GPT-4o or GPT-5 nano?
- These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. On price the gap is dramatic: GPT-5 nano works out roughly 32x cheaper per blended million tokens. GPT-5 nano also takes 400K of context versus 128K for GPT-4o.
- Which is cheaper, GPT-4o or GPT-5 nano?
- GPT-4o costs $2.5/$10 per million input/output tokens, while GPT-5 nano costs $0.05/$0.4. For a typical workload of 10M input and 1.5M output tokens per month, that's $40.00 versus $1.10.
- Which model is better for coding, GPT-4o or GPT-5 nano?
- We don't yet track SWE-bench Verified results for both models; check their individual pages for coding-related scores.