OpenAI
GPT-5.1
OpenAI's warmer, adaptive-reasoning update to GPT-5 with a 400K-token context window for everyday and agentic use.
Our editorial assessment, based on the public sources listed below. Last reviewed .
- Overall rank
- #60
- Tier
- A
- Score
- 74.4
- Main category
- Chat
Strengths
- Warmer, more natural tone than GPT-5
- Adaptive reasoning across task difficulty
- Large 400K-token context window
Considerations
- Overshadowed by newer GPT-5.2/5.4 releases
- Pricing matches GPT-5 without a clear discount
Price
$1.25 / $10 per 1M tokens (input/output)
Shown for reference — price is not part of the score.
Score breakdown
- Performance
- 78.0
- 55% of score
- Reputation
- 80.0
- 35% of score
- Recency
- 35.0
- 10% of score
The overall score combines these sub-scores using the weights shown. How we score →
Verification status
Each field carries its own re-verification date. Amber means older than 90 days — treat those figures as stale until re-checked.
- Pricing
- Benchmark
- Reputation
- Feature list
Checked against the sources listed below.
Sources
- OpenAI API — Deprecations (opens in a new tab)Accessed:
- Wikipedia — GPT-5.5 (opens in a new tab)Accessed:
- TeamAI — 2026 AI Frontier Model War (opens in a new tab)Accessed:
- YouTube — Ranking Every AI Tool 2026 (opens in a new tab)Accessed:
- OpenAI Help Center — Retiring GPT-4o and other ChatGPT models (opens in a new tab)Accessed:
Show 3 more sources
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