Compare · AI models
GPT-5.4 Pro vs Gemini 3.8 Flash
RANKED BY EPOCH CAPABILITIES INDEX (ECI)
#9 VS #13
CHECKED 28 SEPT 2026
Side by side
Verdict
GPT-5.4 Pro ranks #9 of 20 on Epoch Capabilities Index (ECI) (159.12); Gemini 3.8 Flash ranks #13 (157.13).
Rank 09 of 20 · leads
Epoch Capabilities Index (ECI)
159.12
MakerOpenAI
Date2026
Verified—
Evidence
Epoch AI epoch_capabilities_index/eci_scores.csv (LLM Benchmark Data ZIP, fetched 2026-09-28). ECI 159.12, accessibility API access, release date 2026-03-05. Pricing/context via Statlyte (statlyte.com/models/openai/gpt-5-4-pro), MIT licensed.Rank 13 of 20
Epoch Capabilities Index (ECI)
157.13
MakerGoogle DeepMind
Date2026
Verified—
Evidence
Epoch AI epoch_capabilities_index/eci_scores.csv (LLM Benchmark Data ZIP, fetched 2026-09-28). ECI 157.13, accessibility API access, release date 2026-09-02. Not matched in Statlyte’s dataset this run.Try another pair
More GPT-5.4 Pro matchups
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- GPT-5.4 Pro vs Claude Fable 5.1
- GPT-5.4 Pro vs Claude Fable 5
- GPT-5.4 Pro vs Claude Opus 5
- GPT-5.4 Pro vs GPT-5.5 Pro
- GPT-5.4 Pro vs GPT-5.6 Sol
- GPT-5.4 Pro vs GPT-5.6 Terra
- GPT-5.4 Pro vs GPT-5.5
- GPT-5.4 Pro vs Claude Opus 4.8
- GPT-5.4 Pro vs Gemini 3.7 Flash
- GPT-5.4 Pro vs Kimi K3
- GPT-5.4 Pro vs GPT-5.4
Source Ranking: Epoch AI, AI Benchmarking Hub, Epoch Capabilities Index (epoch.ai/data/benchmark_data.zip, CC BY 4.0). Per-entry pricing/context:…
Last checked 28 Sept 2026