AI Model Profile · OpenAI
GPT-4 (Mar 2023)
GPT-4 (Mar 2023) is an AI model developed by OpenAI (United States), released March 15, 2023. It has approximately 1.8T parameters. It was trained on about 2.1×1025 FLOP of compute. It is a closed model available via API.
Frontier model · API access · Epoch confidence: Likely · Source: Epoch AI · Updated 2026-08-17
Specifications
| Developer | OpenAI |
| Country | United States |
| Released | March 15, 2023 |
| Domain | Multimodal,Language,Vision |
| Parameters | 1.8T |
| Training compute | 2.1×1025 FLOP |
| Training cost (2023 USD) | $37m |
| Training hardware | 25,000× NVIDIA A100 SXM4 40 GB |
| Training power draw | 19.9 MW |
| Weights | Closed / API |
| Access | API access |
| Frontier model | Yes |
All figures from Epoch AI's Notable AI Models database (CC BY 4.0). Blank fields are undisclosed by the developer — never estimated by Affärslivet.
Benchmarks
Performance on Epoch AI's reproducible evaluations (higher is better; scores are the best across scorers). These are independent runs, not developer-reported numbers.
Source: Epoch AI Benchmarking Hub. GPQA Diamond = graduate-level science Q&A; SWE-Bench Verified = real software-engineering tasks; FrontierMath = research-level maths; MATH Level 5 = hardest competition maths; AIME = olympiad maths; SimpleQA = factual accuracy.
Frequently asked
- Who developed GPT-4 (Mar 2023)?
- GPT-4 (Mar 2023) was developed by OpenAI (United States) and released on March 15, 2023.
- How big is GPT-4 (Mar 2023)?
- GPT-4 (Mar 2023) has approximately 1.8T parameters and was trained on about 2.1×10^25 FLOP of compute, at an estimated training-compute cost of $37m. Source: Epoch AI.
- Is GPT-4 (Mar 2023) open source?
- GPT-4 (Mar 2023) is a closed model — its weights are not publicly released; it is available via API access.
- How does GPT-4 (Mar 2023) perform on benchmarks?
- On Epoch AI's evaluations, GPT-4 (Mar 2023) scores 35.7% on GPQA Diamond, 0.6% on AIME (OTIS Mock). Source: Epoch AI Benchmarking Hub.
Sources
Cite this model profile
Free to cite, quote and reference under CC BY 4.0 — with attribution to Affärslivet. Writing an article or answer? Reference this model profile as:
APA
Affärslivet Research. (2026). GPT-4 (Mar 2023) — specifications & benchmarks. Affärslivet. https://xn--affrslivet-s5a.com/en/ai/models/gpt-4-mar-2023
MLA
"GPT-4 (Mar 2023) — specifications & benchmarks." Affärslivet, 2026-08-17, xn--affrslivet-s5a.com/en/ai/models/gpt-4-mar-2023.
Source: Affärslivet — xn--affrslivet-s5a.com/en/ai/models/gpt-4-mar-2023. Attribute to Affärslivet when citing or linking.