Free AI model APIs
Which models you can call without paying, read daily from each company's own pages: models that are free to call, free tiers, and free daily tokens in exchange for sharing your data. Each row gives the limit as the company publishes it and when AIWire first saw it.
OpenAI
15| Model | Kind | Limit | Conditions | Since | Source |
|---|---|---|---|---|---|
| GPT-4.1 nanogpt-4.1-nano | Free for shared data | 10M tokens a day for Launch and Grow (2.5M for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-4o (2024-05-13)gpt-4o-2024-05-13 | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-5 (2025-08-07)gpt-5-2025-08-07 | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-5 mini (2025-08-07)gpt-5-mini-2025-08-07 | Free for shared data | 10M tokens a day for Launch and Grow (2.5M for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-5 nano (2025-08-07)gpt-5-nano-2025-08-07 | Free for shared data | 10M tokens a day for Launch and Grow (2.5M for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-5.6 Lunagpt-5.6-luna | Free for shared data | 10M tokens a day for Launch and Grow (2.5M for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-5.6 Solgpt-5.6-sol | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-5.6 Terragpt-5.6-terra | Free for shared data | 10M tokens a day for Launch and Grow (2.5M for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-6 Astragpt-6-astra | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-6 Lunagpt-6-luna | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-6 Solgpt-6-sol | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| GPT-6.1 Solgpt-6.1-sol | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| o1 (2024-12-17)o1-2024-12-17 | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| o3 (2025-04-16)o3-2025-04-16 | Free for shared data | 1M tokens a day for Launch and Grow (250K for Build) | — | in place when tracking began (October 12, 2026) | source |
| o4 mini (2025-04-16)o4-mini-2025-04-16 | Free for shared data | 10M tokens a day for Launch and Grow (2.5M for Build) | — | in place when tracking began (October 12, 2026) | source |
Terms as of October 12, 2026: OpenAI will give 30 days notice before terminating this program. source
No first-party free API tier is documented.
| Model | Kind | Limit | Conditions | Since | Source |
|---|---|---|---|---|---|
| Gemini 2.5 Flashgemini-2.5-flash | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 2.5 Flash-Litegemini-2.5-flash-lite | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 2.5 Flash Native Audio Preview (12-2025)gemini-2.5-flash-native-audio-preview-12-2025 | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 2.5 Flash Preview TTSgemini-2.5-flash-preview-tts | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 2.5 Progemini-2.5-pro | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3 Flash Previewgemini-3-flash-preview | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.1 Flash Litegemini-3.1-flash-lite | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.1 Flash Live Previewgemini-3.1-flash-live-preview | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.1 Flash TTS Previewgemini-3.1-flash-tts-preview | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.5 Flashgemini-3.5-flash | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.5 Flash Litegemini-3.5-flash-lite | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.5 Live Translate Previewgemini-3.5-live-translate-preview | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.5 Transcribegemini-3.5-transcribe | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.5 Transcribe Livegemini-3.5-transcribe-live | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.6 Flashgemini-3.6-flash | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.7 Flashgemini-3.7-flash | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.8 Flashgemini-3.8-flash | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.8 Flash Lite TTSgemini-3.8-flash-lite-tts | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.8 Flash TTSgemini-3.8-flash-tts | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.8 Livegemini-3.8-live | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini 3.8 Live Extended Thinkinggemini-3.8-live-extended-thinking | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini Robotics ER 2 Previewgemini-robotics-er-2-preview | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
| Gemini Robotics ER 2 Streaming Previewgemini-robotics-er-2-streaming-preview | Free tier | Not published | — | in place when tracking began (October 7, 2026) | source |
No first-party free API tier is documented.
No first-party free API tier is documented.
Terms as of October 12, 2026: Contributor mode: On Model API, Contributor mode runs the same models at heavily discounted token prices, in exchange for permission to use your content to train future Meta models. It lowers the barrier to entry for prototyping, testing integrations, and scaling experiments where it's acceptable for Meta to use your content to train future Meta models. source
No first-party free API tier is documented.
| Model | Kind | Limit | Conditions | Since | Source |
|---|---|---|---|---|---|
| Mistral Moderation 2mistral-moderation-2603 | Free tier | Not published | — | in place when tracking began (October 8, 2026) | source |
No first-party free API tier is documented.
Z.ai
3| Model | Kind | Limit | Conditions | Since | Source |
|---|---|---|---|---|---|
| GLM-4.5-Flashglm-4.5-flash | Free model | Not published | — | in place when tracking began (October 7, 2026) | source |
| GLM-4.6V-Flashglm-4.6v-flash | Free model | Not published | — | in place when tracking began (October 7, 2026) | source |
| GLM-4.7-Flashglm-4.7-flash | Free model | Not published | — | in place when tracking began (October 7, 2026) | source |
No first-party free API tier is documented.
Terms as of October 8, 2026: Only models in the Singapore region with the service deployment scope set to International are eligible for a free quota. The free quota is valid for 90 days, starting from the date you activate Alibaba Cloud Model Studio, the model is released, or your model request is approved (whichever is later). Each model (such as qwen-plus, qwen3.6-plus, or qwen3.6-plus-2026-04-02) has its own independent free quota (typically 1,000,000 tokens). A snapshot version with a date suffix (for example, qwen3.7-max-2026-05-17) and the latest version without a date suffix (for example, qwen3.7-max) are treated as two independent models, each with its own free quota. The free quota only covers charges for real-time inference (invocations). source
No first-party free API tier is documented. build.nvidia.com is a free trial for trying models, not a free API tier, and NVIDIA doesn't publish its limits.
Where to find the numbers
Google and Mistral show free-tier rate limits only after you sign in: Gemini's in Google AI Studio, Mistral's in the Mistral console. AIWire can't read pages behind a login, so those rows say "Not published".
"In place when tracking began" means the row was already on the company's page the first time AIWire read it. Free access can end at short notice: check the company's page before you rely on it.