All models

#53 GPT-5 Mini

OpenAI · gpt-5-mini

Released: · Source

GPT-5 Mini is a model from OpenAI. Exact version: gpt-5-mini. See the source for capabilities and limitations.

Use cases
Coding, Image understanding, Reasoning, Text
Accepts
Text & code, Images
Produces
Text & code
Context
400000 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 [143.6, 147.15]

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 · high · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

Chess Puzzles; Epoch AI own run; best score across scorers

Epoch AI own run; Chess Puzzles; version: gpt-5-mini-2025-08-07_high; mode: high; source id: eJgi8PW5QQsWq7APrDHbz2; file: chess_puzzles.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: 07.08.2026

Independent run · low · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

Chess Puzzles; Epoch AI own run; best score across scorers

Epoch AI own run; Chess Puzzles; version: gpt-5-mini-2025-08-07_low; mode: low; source id: KqpMqic8CAagkXDthyyrqy; file: chess_puzzles.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: 07.08.2026

Independent run · minimal · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

Chess Puzzles; Epoch AI own run; best score across scorers

Epoch AI own run; Chess Puzzles; version: gpt-5-mini-2025-08-07_minimal; mode: minimal; source id: Kb88JJMCW6gdqtUSUfcMwh; file: chess_puzzles.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: 07.08.2026

Independent run · high · 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-5-mini-2025-08-07_high; mode: high; source id: DkMXbLvTgWJDWnUQVuBA8J; 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: 13.11.2025

Independent run · medium · 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-5-mini-2025-08-07_medium; mode: medium; source id: VPHGtT9EdPS6YxbzDAt98q; 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: 13.11.2025

Independent run · high · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

FrontierMath-Tier-4-2025-07-01-Private; Epoch AI own run; best score across scorers

Epoch AI own run; FrontierMath-Tier-4-2025-07-01-Private; version: gpt-5-mini-2025-08-07_high; mode: high; source id: 5rh6TyPLbkJmQZs8iY6msJ; file: frontiermath_tier_4.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: 30.10.2025

Independent run · medium · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

FrontierMath-Tier-4-2025-07-01-Private; Epoch AI own run; best score across scorers

Epoch AI own run; FrontierMath-Tier-4-2025-07-01-Private; version: gpt-5-mini-2025-08-07_medium; mode: medium; source id: EAqUKKCdvdkYTGegACdean; file: frontiermath_tier_4.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: 07.08.2025

Independent run · high · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

FrontierMath-Tier-4-v2-Private; Epoch AI own run; best score across scorers

Epoch AI own run; FrontierMath-Tier-4-v2-Private; version: gpt-5-mini-2025-08-07_high; mode: high; source id: 2WxRbjq5ZWTgiXZPqYUG4R; file: frontiermath_tier_4_v2.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: 12.06.2026

Independent run · high · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

FrontierMath-Tiers-1-3-v2-Private; Epoch AI own run; best score across scorers

Epoch AI own run; FrontierMath-Tiers-1-3-v2-Private; version: gpt-5-mini-2025-08-07_high; mode: high; source id: YSR9WCR2SnJYvP7DJwX7YN; file: frontiermath_tiers_1_3_v2.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: 12.06.2026

Independent run · low · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

FrontierMath-Tiers-1-3-v2-Private; Epoch AI own run; best score across scorers

Epoch AI own run; FrontierMath-Tiers-1-3-v2-Private; version: gpt-5-mini-2025-08-07_low; mode: low; source id: SrVpkvKRweaBHSVwPLAhBQ; file: frontiermath_tiers_1_3_v2.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: 27.08.2026

Independent run · minimal · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

FrontierMath-Tiers-1-3-v2-Private; Epoch AI own run; best score across scorers

Epoch AI own run; FrontierMath-Tiers-1-3-v2-Private; version: gpt-5-mini-2025-08-07_minimal; mode: minimal; source id: jrbb2oJv95wiFbnCfN56y9; file: frontiermath_tiers_1_3_v2.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: 27.08.2026

Independent run · high · 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-5-mini-2025-08-07_high; mode: high; source id: jP8EyLtPFsakgnsHe2oJM6; 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: 30.10.2025

Independent run · medium · 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-5-mini-2025-08-07_medium; mode: medium; source id: CFNzodoTSVVVgp9PUXftUP; 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: 07.08.2025

Independent run · minimal · 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-5-mini-2025-08-07_minimal; mode: minimal; source id: hYSstHWNUNwYoZdmZpYQqK; 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: 07.08.2026

Independent run · high · 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-5-mini-2025-08-07_high; mode: high; source id: 5duoiNDccsgaW7UVt6feYX; 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: 30.10.2025

Independent run · medium · 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-5-mini-2025-08-07_medium; mode: medium; source id: 3NYyCGnM6XhgytjyVGtwh8; 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: 20.08.2025

Independent run · high · 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-5-mini-2025-08-07_high; mode: high; source id: R82gycJfm5jaCdh32tFkH4; 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: 30.10.2025

Independent run · medium · 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-5-mini-2025-08-07_medium; mode: medium; source id: 65DJZN2XzPw4RGpa4TCfA5; 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: 07.08.2025

Independent run · minimal · 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-5-mini-2025-08-07_minimal; mode: minimal; source id: 7VLdaSiAanBwM9TJUB5BhU; 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: 07.08.2026

Independent run · high · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

Mystery Game Puzzles; Epoch AI own run; best score across scorers

Epoch AI own run; Mystery Game Puzzles; version: gpt-5-mini-2025-08-07_high; mode: high; source id: THodvrqzCUw7fjpxvKMMWT; file: mystery_game_puzzles.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: 27.08.2026

Independent run · medium · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

Mystery Game Puzzles; Epoch AI own run; best score across scorers

Epoch AI own run; Mystery Game Puzzles; version: gpt-5-mini-2025-08-07_medium; mode: medium; source id: 8RmBWoBLhvciTpz2oPSbDs; file: mystery_game_puzzles.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: 27.08.2026

Independent run · minimal · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

Mystery Game Puzzles; Epoch AI own run; best score across scorers

Epoch AI own run; Mystery Game Puzzles; version: gpt-5-mini-2025-08-07_minimal; mode: minimal; source id: kW6hSbkCwQczqbazduGXPR; file: mystery_game_puzzles.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: 27.08.2026

Independent run · medium · 20.09.2026 · Higher is better

Snapshot: 2026-09-20

Conditions

SWE-bench Verified; Epoch AI own run; best score across scorers

Epoch AI own run; SWE-Bench verified; version: gpt-5-mini-2025-08-07_medium; mode: medium; source id: 7nvdQy3AwKtoay2FBvfST5; file: swe_bench_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: 01.02.2026

Independent run · high · 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-5-mini-2025-08-07_high; mode: high; source id: 8d5RuFTTJKuJ5iJYmPZVJe; 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: 10.08.2026

SourceVerified 20.09.2026