MiniMax M3 vs GPT-6 Astra: price, context window and capabilities
MiniMax M3 (minimax/minimax-m3) from MiniMax and GPT-6 Astra (openai/gpt-6-astra) from OpenAI are both multimodal language models on the OceanToken API. MiniMax M3 costs less per token than GPT-6 Astra: $0.30 against $9.00 per 1M input tokens (97% less) and $1.20 against $45.00 per 1M output tokens (97% less). GPT-6 Astra is 10% off its official price on OceanToken, for every account. GPT-6 Astra has the larger context window: 1.05M tokens (1,050,000) against 524K (524,288) for MiniMax M3. Both support tool calling, reasoning, structured outputs and image input; only MiniMax M3 also lists video input; only GPT-6 Astra also lists file input.
Side by side
| Spec | MiniMax M3 | GPT-6 Astra −10% |
|---|---|---|
| Model | MiniMax M3minimax/ | GPT-6 Astraopenai/ |
| Publisher | MiniMax | OpenAI |
| Kind | Text, vision & video | Text & vision |
| Context window | 524K tokens524,288 | 1.05M tokens1,050,000 |
| Input price | $0.30 / 1M tokens | $9.00 / 1M tokens |
| Output price | $1.20 / 1M tokens | $45.00 / 1M tokens |
| Cached input price | $0.06 / 1M tokens | $1.00 / 1M tokens |
| Cache write price | – | $12.50 / 1M tokens |
| Web search price | – | $0.01 / search |
| Discount (vs official, top tier) | — | −10% |
| Inputs | text, images and video | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose MiniMax M3 to spend less per token: 97% less for input and 97% less for output than GPT-6 Astra.
- Choose GPT-6 Astra for the longest inputs: its context window holds 1.05M tokens against 524K for MiniMax M3.
- Choose MiniMax M3 if you need video input: GPT-6 Astra does not list it.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key MiniMax M3 GPT-6 Astra
Frequently asked questions
Which is cheaper, MiniMax M3 or GPT-6 Astra?
MiniMax M3. MiniMax M3 costs less per token than GPT-6 Astra: $0.30 against $9.00 per 1M input tokens (97% less) and $1.20 against $45.00 per 1M output tokens (97% less). GPT-6 Astra is 10% off its official price on OceanToken, for every account. The OceanToken console always shows the current price.
Which has the larger context window, MiniMax M3 or GPT-6 Astra?
GPT-6 Astra. GPT-6 Astra has the larger context window: 1.05M tokens (1,050,000) against 524K (524,288) for MiniMax M3.
Can I call both MiniMax M3 and GPT-6 Astra with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id minimax/minimax-m3 or openai/gpt-6-astra.
Models and publishers
MiniMax M3 · GPT-6 Astra · All MiniMax models · All OpenAI models
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