Qwen 3.8 Max Prime vs Claude Mythos 5 vs MiMo-V2.6-Pro-UltraSpeed
Too close to call on our weighted score (MiMo-V2.6-Pro-UltraSpeed 44, Qwen 3.8 Max Prime 42, Claude Mythos 5 36). The right pick depends on what you value most.
Alibaba (Qwen)Qwen 3.8 Max Prime
42/100- ECI—
- Price$4.00 / $12.00
- Context1M
AnthropicClaude Mythos 5
36/100- ECI—
- Price$10.00 / $50.00
- Context1M
XiaomiMiMo-V2.6-Pro-UltraSpeed
44/100- ECI—
- Price$4.35 / $8.70
- Context1.05M
Too close to call
It is close. Our weighted score puts them within 1 points (MiMo-V2.6-Pro-UltraSpeed 44/100, Qwen 3.8 Max Prime 42/100, Claude Mythos 5 36/100), so choose by what matters most for your work: MiMo-V2.6-Pro-UltraSpeed on price and MiMo-V2.6-Pro-UltraSpeed for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceMiMo-V2.6-Pro-UltraSpeedMiMo-V2.6-Pro-UltraSpeed $5.44 · Qwen 3.8 Max Prime $6.00 · Claude Mythos 5 $20.00 per 1M tokens (3:1 blend)
- Longest contextMiMo-V2.6-Pro-UltraSpeedMiMo-V2.6-Pro-UltraSpeed 1,048,576 · Qwen 3.8 Max Prime 1,000,000 · Claude Mythos 5 1,000,000 tokens
- Widest inputsMiMo-V2.6-Pro-UltraSpeedQwen 3.8 Max Prime: Text, Images, Video · Claude Mythos 5: Text, Images, PDFs · MiMo-V2.6-Pro-UltraSpeed: Text, Images, Audio, Video
- Self-hostingMiMo-V2.6-Pro-UltraSpeedPublishes downloadable weights
| Measure | Weight | Qwen 3.8 Max Prime | Claude Mythos 5 | MiMo-V2.6-Pro-UltraSpeed |
|---|---|---|---|---|
| Price | 50% | 13 | 0 | 15 |
| Inputs & features | 30% | 80 | 80 | 80 |
| Context window | 20% | 60 | 60 | 61 |
| Overall | 100% | 42/100 | 36/100 | 44/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Qwen 3.8 Max PrimeAlibaba (Qwen) | Claude Mythos 5Anthropic | MiMo-V2.6-Pro-UltraSpeedXiaomi |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $4.00 (best) | $10.00 | $4.35 |
| Output | $12.00 | $50.00 | $8.70 (best) |
| Cached input | — | — | $0.036 |
| Blended (3:1) | $6.00 | $20.00 | $5.44 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Median of 4 providers | Median of 2 providers | Official Xiaomi API |
| Limits | |||
| Context window | 1,000,000 tokens | 1,000,000 tokens | 1,048,576 tokens (best) |
| Max output | 131,072 tokens (best) | 128,000 tokens | 131,072 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | No | Yes | No |
| Audio | No | No | Yes |
| Video | Yes | No | Yes |
| Reasoning | Yes | Yes | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | No |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | — | — | mimo-v2.6-pro-ultraspeed |
| API providers | 4 | 2 | 9 (best) |
| Released | Sep 23, 2026 | Jun 9, 2026 | Sep 21, 2026 |
| Knowledge cutoff | — | Jan 31, 2026 | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Qwen 3.8 Max Prime$64.00
- Claude Mythos 5$200.00
- MiMo-V2.6-Pro-UltraSpeed$60.90
Which should you choose?
Which is better: Qwen 3.8 Max Prime, Claude Mythos 5 or MiMo-V2.6-Pro-UltraSpeed?
It is close. Our weighted score puts them within 1 points (MiMo-V2.6-Pro-UltraSpeed 44/100, Qwen 3.8 Max Prime 42/100, Claude Mythos 5 36/100), so choose by what matters most for your work: MiMo-V2.6-Pro-UltraSpeed on price and MiMo-V2.6-Pro-UltraSpeed for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Qwen 3.8 Max Prime, Claude Mythos 5 or MiMo-V2.6-Pro-UltraSpeed?
MiMo-V2.6-Pro-UltraSpeed is cheaper at $4.35 input / $8.70 output per million tokens (official Xiaomi API price). Qwen 3.8 Max Prime costs $4.00 input / $12.00 output per million tokens (median across 4 API providers); Claude Mythos 5 costs $10.00 input / $50.00 output per million tokens (median across 2 API providers). At a typical mix of three input tokens to one output token, that is $5.44 per million tokens for MiMo-V2.6-Pro-UltraSpeed versus $6.00 for Qwen 3.8 Max Prime (1.1× as much) and $20.00 for Claude Mythos 5 (3.7× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Qwen 3.8 Max Prime has not been scored yet, Claude Mythos 5 has not been scored yet and MiMo-V2.6-Pro-UltraSpeed has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Qwen 3.8 Max Prime, Claude Mythos 5 and MiMo-V2.6-Pro-UltraSpeed yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
MiMo-V2.6-Pro-UltraSpeed has the largest context window at 1,048,576 tokens, against 1,000,000 for Qwen 3.8 Max Prime and 1,000,000 for Claude Mythos 5. Maximum output per response: Qwen 3.8 Max Prime up to 131,072, Claude Mythos 5 up to 128,000, MiMo-V2.6-Pro-UltraSpeed up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Qwen 3.8 Max Prime accepts text, images and video; Claude Mythos 5 accepts text, images and PDFs; MiMo-V2.6-Pro-UltraSpeed accepts text, images, audio and video. MiMo-V2.6-Pro-UltraSpeed handles the widest range of inputs.
Are any of these open source?
MiMo-V2.6-Pro-UltraSpeed publishes its weights and can be self-hosted; Qwen 3.8 Max Prime and Claude Mythos 5 is proprietary.
Which is newer?
Qwen 3.8 Max Prime is the newest, released Sep 23, 2026. MiMo-V2.6-Pro-UltraSpeed came out Sep 21, 2026; Claude Mythos 5 came out Jun 9, 2026. Knowledge cutoff: Claude Mythos 5 Jan 31, 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.
