Qwen3.5 Plus vs Nemotron 3 Ultra 550B A55B vs MiniMax-M2.5
Qwen3.5 Plus comes out ahead, 66 to 62 and 61 on our weighted score, though MiniMax-M2.5 is 42% cheaper per token.
- Our pick
Alibaba (Qwen)Qwen3.5 Plus
66/100- ECI146.8
- Price$0.40 / $2.40
- Context1M
NVIDIANemotron 3 Ultra 550B A55B
62/100- ECI146.2
- Price$0.50 / $2.50
- Context1M
MiniMaxMiniMax-M2.5
61/100- ECI146.7
- Price$0.30 / $1.20
- Context205K
Qwen3.5 Plus is our pick
Qwen3.5 Plus is the better all-round choice, scoring 66/100 against Nemotron 3 Ultra 550B A55B (62) and MiniMax-M2.5 (61). It leads on inputs & features. MiniMax-M2.5 wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityQwen3.5 PlusCapabilities Index (ECI): Qwen3.5 Plus 146.8 · MiniMax-M2.5 146.7 · Nemotron 3 Ultra 550B A55B 146.2
- Lowest priceMiniMax-M2.5MiniMax-M2.5 $0.525 · Qwen3.5 Plus $0.90 · Nemotron 3 Ultra 550B A55B $1.00 per 1M tokens (3:1 blend)
- Longest contextQwen3.5 Plus and Nemotron 3 Ultra 550B A55BQwen3.5 Plus 1,000,000 · Nemotron 3 Ultra 550B A55B 1,000,000 · MiniMax-M2.5 204,800 tokens
- Widest inputsQwen3.5 PlusQwen3.5 Plus: Text, Images, Video · Nemotron 3 Ultra 550B A55B: Text · MiniMax-M2.5: Text
- Self-hostingNemotron 3 Ultra 550B A55B and MiniMax-M2.5Publishes downloadable weights
| Measure | Weight | Qwen3.5 Plus | Nemotron 3 Ultra 550B A55B | MiniMax-M2.5 |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 74 | 73 | 74 |
| Price | 25% | 52 | 50 | 63 |
| Inputs & features | 15% | 70 | 45 | 35 |
| Context window | 10% | 60 | 60 | 32 |
| Overall | 100% | 66/100 | 62/100 | 61/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Qwen3.5 PlusAlibaba (Qwen) | Nemotron 3 Ultra 550B A55BNVIDIA | MiniMax-M2.5MiniMax |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 146.8 (best) | 146.2 | 146.7 |
| ECI rank | #65 of 148 (best) | #70 of 148 | #66 of 148 |
| GPQA DiamondGraduate-level science questions | 84.9% | 85.4% (best) | — |
| OTIS Mock AIME 2024–2025Competition mathematics | 86.7% | 86.7% | — |
| SimpleQA VerifiedShort factual questions | 25.4% | — | — |
| Price per million tokens | |||
| Input | $0.40 | $0.50 | $0.30 (best) |
| Output | $2.40 | $2.50 | $1.20 (best) |
| Cached input | — | $0.15 | $0.03 (best) |
| Blended (3:1) | $0.90 | $1.00 | $0.525 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Alibaba API | Official Nvidia API | Official MiniMax (minimax.io) API |
| Limits | |||
| Context window | 1,000,000 tokens (best) | 1,000,000 tokens (best) | 204,800 tokens |
| Max output | 65,536 tokens | 128,000 tokens | 131,072 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | No | No |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | Yes | No | No |
| Reasoning | Yes | Yes | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | Yes | No |
| Availability | |||
| Weights | Proprietary | Open | Open |
| API model ID | qwen3.5-plus | nvidia/nemotron-3-ultra-550b-a55b | MiniMax-M2.5 |
| API providers | 10 | 21 (best) | 21 (best) |
| Released | Feb 16, 2026 | Jun 4, 2026 | Feb 12, 2026 |
| Knowledge cutoff | Apr 2025 | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Qwen3.5 Plus$8.80
- Nemotron 3 Ultra 550B A55B$10.00
- MiniMax-M2.5$5.40
Which should you choose?
Which is better: Qwen3.5 Plus, Nemotron 3 Ultra 550B A55B or MiniMax-M2.5?
Qwen3.5 Plus is the better all-round choice, scoring 66/100 against Nemotron 3 Ultra 550B A55B (62) and MiniMax-M2.5 (61). It leads on inputs & features. MiniMax-M2.5 wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, Qwen3.5 Plus, Nemotron 3 Ultra 550B A55B or MiniMax-M2.5?
MiniMax-M2.5 is cheaper at $0.30 input / $1.20 output per million tokens (official MiniMax (minimax.io) API price). Qwen3.5 Plus costs $0.40 input / $2.40 output per million tokens (official Alibaba 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 $0.90 for Qwen3.5 Plus (1.7× as much) and $1.00 for Nemotron 3 Ultra 550B A55B (1.9× as much).
Which scores higher on benchmarks?
Qwen3.5 Plus scores higher on the Capabilities Index (ECI): Qwen3.5 Plus 146.8 (#65 of 148), 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 (144.6–148.1 vs 142.3–147.9), so treat the gap as small.
Which is better for coding?
There are no published SWE-bench Verified results for Qwen3.5 Plus, Nemotron 3 Ultra 550B A55B and MiniMax-M2.5 yet, so there is no like-for-like coding score. On overall capability, Qwen3.5 Plus leads, which tends to carry over to coding, but test on your own codebase. All three support tool calling for agent workflows.
Which has the bigger context window?
Qwen3.5 Plus and Nemotron 3 Ultra 550B A55B have the largest context windows (1,000,000 and 1,000,000 tokens), against 204,800 for MiniMax-M2.5. Maximum output per response: Qwen3.5 Plus up to 65,536, Nemotron 3 Ultra 550B A55B up to 128,000, MiniMax-M2.5 up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Qwen3.5 Plus accepts text, images and video; Nemotron 3 Ultra 550B A55B accepts text; MiniMax-M2.5 accepts text. Qwen3.5 Plus handles the widest range of inputs.
Are any of these open source?
Nemotron 3 Ultra 550B A55B and MiniMax-M2.5 publishes its weights and can be self-hosted; Qwen3.5 Plus is proprietary.
Which is newer?
Nemotron 3 Ultra 550B A55B is the newest, released Jun 4, 2026. Qwen3.5 Plus came out Feb 16, 2026; MiniMax-M2.5 came out Feb 12, 2026. Knowledge cutoff: Qwen3.5 Plus Apr 2025.
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.
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