MiniMax M2.5 vs Grok 4.5: price, context window and capabilities
MiniMax M2.5 (minimax/minimax-m2.5) is a language model from MiniMax and Grok 4.5 (x-ai/grok-4.5) a multimodal language model from SpaceXAI; both are on the OceanToken API. MiniMax M2.5 costs less per token than Grok 4.5: $0.30 against $2.00 per 1M input tokens (85% less) and $1.20 against $6.00 per 1M output tokens (80% less). Grok 4.5 has the larger context window: 500K tokens (500,000) against 205K (204,800) for MiniMax M2.5. Both support tool calling, reasoning and structured outputs; only Grok 4.5 also lists image input and file input.
Side by side
| Spec | MiniMax M2.5 | Grok 4.5 |
|---|---|---|
| Model | MiniMax M2.5minimax/ | Grok 4.5x- |
| Publisher | MiniMax | SpaceXAI |
| Kind | Text | Text & vision |
| Context window | 205K tokens204,800 | 500K tokens500,000 |
| Input price | $0.30 / 1M tokens | $2.00 / 1M tokens |
| Output price | $1.20 / 1M tokens | $6.00 / 1M tokens |
| Cached input price | $0.03 / 1M tokens | $0.30 / 1M tokens |
| Web search price | – | $0.005 / search |
| Inputs | text | 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 M2.5 to spend less per token: 85% less for input and 80% less for output than Grok 4.5.
- Choose Grok 4.5 for the longest inputs: its context window holds 500K tokens against 205K for MiniMax M2.5.
- Choose Grok 4.5 if you need image input and file input: MiniMax M2.5 does not list them.
- 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 M2.5 Grok 4.5
Frequently asked questions
Which is cheaper, MiniMax M2.5 or Grok 4.5?
MiniMax M2.5. MiniMax M2.5 costs less per token than Grok 4.5: $0.30 against $2.00 per 1M input tokens (85% less) and $1.20 against $6.00 per 1M output tokens (80% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, MiniMax M2.5 or Grok 4.5?
Grok 4.5. Grok 4.5 has the larger context window: 500K tokens (500,000) against 205K (204,800) for MiniMax M2.5.
Can I call both MiniMax M2.5 and Grok 4.5 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-m2.5 or x-ai/grok-4.5.
Models and publishers
MiniMax M2.5 · Grok 4.5 · All MiniMax models · All SpaceXAI models
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