The AI knowledge cutoff is a specific date when an AI model stopped learning from its training data. This means the AI cannot know about world events, news, or new technologies that happened after that fixed point in time. The Freshness Score reflects the knowledge cutoff date's relative position on a 100-point scale between 2021 and now.
Data sourced from OpenRouter API and manual data collection | Last updated: Jul 13, 2026, 11:10 PM UTC
| Model Name | Knowledge Cutoff | Freshness Score | |
|---|---|---|---|
OpenAI: GPT-5.6 Luna Pro | 2026-02-16 | 93 | |
OpenAI: GPT-5.6 Luna | 2026-02-16 | 93 | |
OpenAI: GPT-5.6 Terra Pro | 2026-02-16 | 93 | |
OpenAI: GPT-5.6 Terra | 2026-02-16 | 93 | |
OpenAI: GPT-5.6 Sol Pro | 2026-02-16 | 93 | |
OpenAI: GPT-5.6 Sol | 2026-02-16 | 93 |
| Model Name | Knowledge Cutoff | Freshness Score | |
|---|---|---|---|
OpenAI: GPT-5.5 Pro | 2025-12-01 | 89 | |
OpenAI: GPT-5.5 | 2025-12-01 | 89 | |
OpenAI: GPT-5.4 Nano | 2025-08-31 | 84 | |
OpenAI: GPT-5.4 Mini | 2025-08-31 | 84 |
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| Model Name | Knowledge Cutoff | Freshness Score | |
|---|---|---|---|
OpenAI: GPT-5 Pro | 2024-09-30 | 68 | |
OpenAI: GPT-5 Codex | 2024-09-30 | 68 | |
OpenAI: GPT-5 Chat | 2024-09-30 | 68 | |
OpenAI: GPT-5 | 2024-09-30 | 68 | |
OpenAI: gpt-oss-120b | 2024-06-30 | 63 | |
OpenAI: gpt-oss-20b | 2024-06-30 | 63 | |
OpenAI: o3 Pro | 2024-06-30 | 63 | |
OpenAI: o4 Mini High | 2024-06-30 | 63 | |
OpenAI: o3 | 2024-06-30 | 63 | |
OpenAI: o4 Mini | 2024-06-30 | 63 | |
OpenAI: GPT-4.1 | 2024-06-30 | 63 | |
OpenAI: GPT-4.1 Mini | 2024-06-30 | 63 | |
OpenAI: GPT-4.1 Nano | 2024-06-30 | 63 | |
OpenAI: GPT-5 Mini | 2024-05-31 | 62 | |
OpenAI: GPT-5 Nano | 2024-05-31 | 62 |
| Model Name | Knowledge Cutoff | Freshness Score | |
|---|---|---|---|
OpenAI: GPT-4 Turbo | 2023-12-31 | 54 | |
OpenAI: GPT-4 Turbo Preview | 2023-12-31 | 54 | |
OpenAI: o1-pro | 2023-10-31 | 51 | |
OpenAI: GPT-4o-mini Search Preview | 2023-10-31 | 51 | |
OpenAI: GPT-4o Search Preview | 2023-10-31 | 51 | |
OpenAI: o3 Mini High | 2023-10-31 | 51 | |
OpenAI: o3 Mini | 2023-10-31 | 51 | |
OpenAI: o1 | 2023-10-31 | 51 | |
OpenAI: GPT-4o (2024-11-20) | 2023-10-31 | 51 | |
OpenAI: GPT-4o (2024-08-06) | 2023-10-31 | 51 | |
OpenAI: GPT-4o-mini | 2023-10-31 | 51 | |
OpenAI: GPT-4o-mini (2024-07-18) | 2023-10-31 | 51 | |
OpenAI: GPT-4o | 2023-10-31 | 51 | |
OpenAI: GPT-4o (2024-05-13) | 2023-10-31 | 51 |
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| Model Name | Knowledge Cutoff | Freshness Score | |
|---|---|---|---|
| No results. | |||
| Model Name | Knowledge Cutoff | Freshness Score | |
|---|---|---|---|
OpenAI: GPT-3.5 Turbo (older v0613) | 2021-09-30 | 13 | |
OpenAI: GPT-3.5 Turbo Instruct | 2021-09-30 | 13 | |
OpenAI: GPT-3.5 Turbo 16k | 2021-09-30 | 13 | |
OpenAI: GPT-3.5 Turbo | 2021-09-30 | 13 | |
OpenAI: GPT-4 | 2021-09-30 | 13 |
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