MiniMax-M2.5 vs Nemotron 3 Ultra 550B A55B
Too close to call on our weighted score (Nemotron 3 Ultra 550B A55B 62, MiniMax-M2.5 61). The right pick depends on what you value most.
MiniMaxMiniMax-M2.5
61/100- ECI146.7
- Price$0.30 / $1.20
- Context205K
NVIDIANemotron 3 Ultra 550B A55B
62/100- ECI146.2
- Price$0.50 / $2.50
- Context1M
Add a model
Make it a three-way comparison.
Too close to call
It is close. Our weighted score puts them within a point (Nemotron 3 Ultra 550B A55B 62/100, MiniMax-M2.5 61/100), so choose by what matters most for your work: MiniMax-M2.5 for raw capability and Nemotron 3 Ultra 550B A55B for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityMiniMax-M2.5Capabilities Index (ECI): MiniMax-M2.5 146.7 · Nemotron 3 Ultra 550B A55B 146.2
- Lowest priceMiniMax-M2.5MiniMax-M2.5 $0.525 · Nemotron 3 Ultra 550B A55B $1.00 per 1M tokens (3:1 blend)
- Longest contextNemotron 3 Ultra 550B A55BNemotron 3 Ultra 550B A55B 1,000,000 · MiniMax-M2.5 204,800 tokens
- Widest inputsSame inputsMiniMax-M2.5: Text · Nemotron 3 Ultra 550B A55B: Text
- Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
| Measure | Weight | MiniMax-M2.5 | Nemotron 3 Ultra 550B A55B |
|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 74 | 73 |
| Price | 25% | 63 | 50 |
| Inputs & features | 15% | 35 | 45 |
| Context window | 10% | 32 | 60 |
| Overall | 100% | 61/100 | 62/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | MiniMax-M2.5MiniMax | Nemotron 3 Ultra 550B A55BNVIDIA |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | 146.7 (best) | 146.2 |
| ECI rank | #66 of 148 (best) | #70 of 148 |
| GPQA DiamondGraduate-level science questions | — | 85.4% |
| OTIS Mock AIME 2024–2025Competition mathematics | — | 86.7% |
| Price per million tokens | ||
| Input | $0.30 (best) | $0.50 |
| Output | $1.20 (best) | $2.50 |
| Cached input | $0.03 (best) | $0.15 |
| Blended (3:1) | $0.525 (best) | $1.00 |
| Long-context rate | Same rate | Same rate |
| Price source | Official MiniMax (minimax.io) API | Official Nvidia API |
| Limits | ||
| Context window | 204,800 tokens | 1,000,000 tokens (best) |
| Max output | 131,072 tokens (best) | 128,000 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | No |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Open | Open |
| API model ID | MiniMax-M2.5 | nvidia/nemotron-3-ultra-550b-a55b |
| API providers | 21 | 21 |
| Released | Feb 12, 2026 | Jun 4, 2026 |
| Knowledge cutoff | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- MiniMax-M2.5$5.40
- Nemotron 3 Ultra 550B A55B$10.00
Which should you choose?
Which is better: MiniMax-M2.5 or Nemotron 3 Ultra 550B A55B?
It is close. Our weighted score puts them within a point (Nemotron 3 Ultra 550B A55B 62/100, MiniMax-M2.5 61/100), so choose by what matters most for your work: MiniMax-M2.5 for raw capability and Nemotron 3 Ultra 550B A55B for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, MiniMax-M2.5 or Nemotron 3 Ultra 550B A55B?
MiniMax-M2.5 is cheaper at $0.30 input / $1.20 output per million tokens (official MiniMax (minimax.io) API price). Nemotron 3 Ultra 550B A55B costs $0.50 input / $2.50 output per million tokens (official Nvidia API price). At a typical mix of three input tokens to one output token, that is $0.525 per million tokens for MiniMax-M2.5 versus $1.00 for Nemotron 3 Ultra 550B A55B (1.9× as much).
Which scores higher on benchmarks?
MiniMax-M2.5 scores higher on the Capabilities Index (ECI): MiniMax-M2.5 146.7 (#66 of 148) and Nemotron 3 Ultra 550B A55B 146.2 (#70 of 148). The confidence ranges of the top two overlap (142.3–147.9 vs 143.9–148.1), so treat the gap as small.
Which is better for coding?
There are no published SWE-bench Verified results for MiniMax-M2.5 and Nemotron 3 Ultra 550B A55B yet, so there is no like-for-like coding score. On overall capability, MiniMax-M2.5 leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.
Which has the bigger context window?
Nemotron 3 Ultra 550B A55B has the largest context window at 1,000,000 tokens, against 204,800 for MiniMax-M2.5. Maximum output per response: MiniMax-M2.5 up to 131,072, Nemotron 3 Ultra 550B A55B up to 128,000 tokens.
Which can read images, PDFs, audio or video?
MiniMax-M2.5 accepts text; Nemotron 3 Ultra 550B A55B accepts text. They handle the same number of input types.
Are any of these open source?
Yes, both publish their weights, so you can self-host them.
Which is newer?
Nemotron 3 Ultra 550B A55B is the newest, released Jun 4, 2026. MiniMax-M2.5 came out Feb 12, 2026.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
Related comparisons
- Add GPT-5.4 nanoThree-way comparison
- MiniMax-M2.5 vs GPT-5.4 nanoOpenAI · ECI 145.8
- MiniMax-M2.5 vs Qwen3.5 PlusAlibaba (Qwen) · ECI 146.8
- MiniMax-M2.5 vs DeepSeek V3.2DeepSeek · ECI 146.3
- Nemotron 3 Ultra 550B A55B vs Qwen3.6 27BAlibaba (Qwen) · ECI 146.5
- Nemotron 3 Ultra 550B A55B vs Gemini 3.5 Flash LiteGoogle · ECI 145.1
- Nemotron 3 Ultra 550B A55B vs Kimi K2 ThinkingMoonshot AI · ECI 146.0
