GPT-5 vs GPT-5 mini
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
Updated
GPT-5 specs · GPT-5 mini specs- PriceGPT-5 mini
GPT-5 mini is roughly 5.0× cheaper on output tokens ($2.00 vs $10.00 per 1M).
- Context windowTie
Both ship a 400K-token context window.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- ModalitiesTie
Both handle text, vision, audio.
- OpennessTie
Both are closed-weight, API-only.
On balance GPT-5 mini edges ahead, winning 1 of 5 categories against GPT-5's 0. GPT-5 mini is roughly 5.0× cheaper on output tokens ($2.00 vs $10.00 per 1M). Both ship a 400K-token context window.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. Both target the same set of modalities (text, vision, audio), so the deciding factors are price, context, and raw quality. Both are closed-weight, API-only.
Both shipped within roughly a month of each other in 2025, so they share the same generation of training data and tooling. GPT-5 is usually picked for coding llm and agents workloads, while GPT-5 mini sees more deployments in code completion and customer support. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | GPT-5 | GPT-5 mini |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Released | Aug 2025 | Aug 2025 |
| Modalities | text, vision, audio | text, vision, audio |
| Context window | 400K tokens | 400K tokens |
| Max output | 128K tokens | 128K tokens |
| Input · 1M | $1.25 / 1M tokens | $0.25 / 1M tokens |
| Output · 1M | $10.00 / 1M tokens | $2.00 / 1M tokens |
| Knowledge cutoff | 2024-09 | 2024-09 |
| Open weights | No | No |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day$18.75 vs $3.75
- Heavy usage, 1M in / 500k out per day$188 vs $37.50
- RAG workload, 5M in / 200k out per day$248 vs $49.50
Light usage, 100k in / 50k out per day: $18.75 vs $3.75 per month, model B comes out ahead. Heavy usage, 1M in / 500k out per day: $188 vs $37.50 per month, model B comes out ahead. RAG workload, 5M in / 200k out per day: $248 vs $49.50 per month, model B comes out ahead.
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- GPT-5$0.625
- GPT-5 mini$0.125
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
- MMLU91.4
- HumanEval96.2
- GPQA89.4
- SWE-bench Verified74.9
GPT-5 fits when…
- Unified model, reasoning routed automatically per query
- Excellent tool-use and JSON-mode discipline
- Strong agent performance on SWE-bench Verified
GPT-5 mini fits when…
- Excellent price-quality ratio for production workloads
- Fast first-token latency
- Same tool-use API surface as flagship
- Cost-sensitive workloads, 5.0× cheaper than GPT-5 on output tokens.
Consider GPT-5.5
OpenAI's mid-cycle GPT-5 refresh, improved reasoning, tool use, and multimodal grounding over the 2025 launch.
Frequently asked
Is GPT-5 or GPT-5 mini cheaper?
GPT-5 mini is cheaper at $2.00 / 1M tokens per million output tokens, vs $10.00 / 1M tokens for GPT-5.Which has the larger context window?
Both GPT-5 and GPT-5 mini ship a 400K-token context window.Is GPT-5 or GPT-5 mini better for coding?
Both GPT-5 and GPT-5 mini are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Neither model ships open weights, both are accessible only via their respective providers' APIs.When were GPT-5 and GPT-5 mini released?
GPT-5 was released by OpenAI on 2025-08-07. GPT-5 mini was released by OpenAI on 2025-08-07.
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