Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Data sourced from the Interestana AI Index, kept current as developers update their models.
Model A — OpenAI
GPT-4o mini is the cost-efficient sibling of GPT-4o, optimised for high-volume, low-latency tasks like summarisation and classification.
Model B — Meta
Llama 4 405B is Meta’s frontier-class open-weight model, distributed under the Llama Community License. Strong on multilingual tasks and competitive with proprietary models on reasoning benchmarks.
| Property | GPT-4o mini | Llama 4 405B |
|---|---|---|
| Released | Jul 18, 2024 | Apr 5, 2025 |
| Developer | OpenAI | Meta |
| Type | multimodal | multimodal |
| License | proprietary | open-weight |
| Context window | 128,000 | 1,000,000 |
| Parameters | — | 405B |
| Input $/M tokens | $0.15 | — |
| Output $/M tokens | $0.60 | — |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins).
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Programmatic access available at /api/ai/compare?a=gpt-4o-mini&b=llama-4-405b. CORS is open. Citation guidance: /about/editorial-process.