GPT-5.5 vs MiniMax M3: API Pricing
Input and output token rates, context windows, and real monthly cost for GPT-5.5 (OpenAI) and MiniMax M3 (MiniMax), side by side. Prices are standard on-demand rates as of June 2026.
The short answer
For a typical coding-agent workload (60M in / 12M out per month), MiniMax M3 is the cheaper option at $32.40/mo versus $660/mo for GPT-5.5 - about 95% less (20.4× cheaper). On the headline sticker of 1M input + 1M output, GPT-5.5 is $35.00 and MiniMax M3 is $1.50.
Rates at a glance
| GPT-5.5 | MiniMax M3 | |
|---|---|---|
| Input ($/1M tokens) | $5.00 | $0.30 |
| Output ($/1M tokens) | $30.00 | $1.20 |
| Blended (1M in + 1M out) | $35.00 | $1.50 |
| Context window | 1,050K | 1,000K |
| Type | Proprietary | Open-weight |
| Provider | OpenAI | MiniMax |
Monthly cost by workload
Estimated monthly API spend at each workload's token volume. Output usually costs several times input, so the winner can flip with your mix.
| Workload | GPT-5.5 | MiniMax M3 | Cheaper |
|---|---|---|---|
| Chatbot / assistant10M in / 3M out | $140/mo | $6.60/mo | MiniMax M3 |
| Coding agent60M in / 12M out | $660/mo | $32.40/mo | MiniMax M3 |
| RAG / summarization40M in / 4M out | $320/mo | $16.80/mo | MiniMax M3 |
| Batch / classification20M in / 2M out | $160/mo | $8.40/mo | MiniMax M3 |
Want your own in/out split? Use the full interactive comparator to rank every model and provider for your exact workload.
Frequently asked questions
Is GPT-5.5 or MiniMax M3 cheaper?
It depends on your input/output mix, but for a typical coding-agent workload (60M in / 12M out per month) MiniMax M3 costs $32.40/mo versus $660/mo for GPT-5.5 - about 95% less (20.4x). On the headline sticker (1M input + 1M output), GPT-5.5 is $35.00 and MiniMax M3 is $1.50.
What are the token rates for GPT-5.5 and MiniMax M3?
GPT-5.5 (OpenAI) is $5.00 per 1M input and $30.00 per 1M output. MiniMax M3 (MiniMax) is $0.30 per 1M input and $1.20 per 1M output. These are standard on-demand rates, not cached or batch.
Is GPT-5.5 or MiniMax M3 open-weight?
GPT-5.5 is proprietary and MiniMax M3 is open-weight. Open-weight models can be self-hosted or run on third-party hosts at different rates, so the first-party price shown here is a starting point, not the only option.
What context window do GPT-5.5 and MiniMax M3 support?
GPT-5.5 supports 1,050K tokens and MiniMax M3 supports 1,000K tokens. Some models also step up pricing past a size threshold - check the source pricing pages for long-context tiers.
More pricing comparisons
Stay ahead of the AI tools curve
Picks, reviews, and automation tips every weekday. Free, no spam.