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#33 GPT-4.1 nano

OpenAI · gpt-4.1-nano

Released: · Source

GPT-4.1 nano is a model from OpenAI. Exact version: gpt-4.1-nano. See the source for capabilities and limitations.

Use cases
Coding, Image understanding, Text
Accepts
Text & code, Images
Produces
Text & code
Context
1047576 tokens

Access

OpenAI · API Computing: Cloud

Price USD

No verified data

Evaluator & score

Composite index · published model-group index · 20.09.2026 · Higher is better

Snapshot: 2026-09-20 · 90% CI [124.26, 131.97]

Official Epoch AI index; combines own, third-party and developer-reported results. It is not a safety audit or a media-generation score.

Conditions

Epoch Capabilities Index; official model-group estimates

Official ECI model scores, Epoch AI, CC BY 4.0. Composite of own, third-party and developer-reported results. 90% bootstrap interval. Not a per-effort score; export date is the model release date, not measurement date. Methodology: https://epoch.ai/eci#documentation

Independent run · default (effort unspecified by source) · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

FrontierMath; Epoch AI own run; best score across scorers

Epoch AI own run; FrontierMath-2025-02-28-Private; version: gpt-4.1-nano-2025-04-14; mode: default (effort unspecified by source); source id: chtQvebcoaE33KkhAjbCnw; file: frontiermath.csv. CC BY 4.0, Epoch AI. Snapshot 2026-09-20. Source column Best score (across scorers), not AIpedia's selection of the best effort.

Measurement date: 14.04.2025

Independent run · default (effort unspecified by source) · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

GPQA Diamond; Epoch AI own run; best score across scorers

Epoch AI own run; GPQA diamond; version: gpt-4.1-nano-2025-04-14; mode: default (effort unspecified by source); source id: azWfeFPP6zSocuQX3JYBU5; file: gpqa_diamond.csv. CC BY 4.0, Epoch AI. Snapshot 2026-09-20. Source column Best score (across scorers), not AIpedia's selection of the best effort.

Measurement date: 14.04.2025

Independent run · default (effort unspecified by source) · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

MATH level 5; Epoch AI own run; best score across scorers

Epoch AI own run; MATH level 5; version: gpt-4.1-nano-2025-04-14; mode: default (effort unspecified by source); source id: K4TfMXsaPd4Z46zFmiV4Rf; file: math_level_5.csv. CC BY 4.0, Epoch AI. Snapshot 2026-09-20. Source column Best score (across scorers), not AIpedia's selection of the best effort.

Measurement date: 14.04.2025

Independent run · default (effort unspecified by source) · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

Mock AIME 2024/2025; Epoch AI own run; best score across scorers

Epoch AI own run; OTIS Mock AIME 2024-2025; version: gpt-4.1-nano-2025-04-14; mode: default (effort unspecified by source); source id: 3qLHwibDhgtWEbKGwxUYVa; file: otis_mock_aime_2024_2025.csv. CC BY 4.0, Epoch AI. Snapshot 2026-09-20. Source column Best score (across scorers), not AIpedia's selection of the best effort.

Measurement date: 14.04.2025

Independent run · default (effort unspecified by source) · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

SimpleQA Verified; Epoch AI own run; best score across scorers

Epoch AI own run; SimpleQA Verified; version: gpt-4.1-nano-2025-04-14; mode: default (effort unspecified by source); source id: A4JEeJR5LQfLR3Hb8z7kL2; file: simpleqa_verified.csv. CC BY 4.0, Epoch AI. Snapshot 2026-09-20. Source column Best score (across scorers), not AIpedia's selection of the best effort.

Measurement date: 31.08.2026

SourceVerified 20.09.2026