Aion-3.0 vs Ember-1 vs Command A Plus
Too close to call on our weighted score (Ember-1 36, Command A Plus 35, Aion-3.0 26). The right pick depends on what you value most.
Aion Labs
Aion-3.0
26/100- ECI—
- Price$3.00 / $6.00
- Context131K
Fireworks AIEmber-1
36/100- ECI—
- Price$3.00 / $15.00
- Context1.05M
CohereCommand A Plus
35/100- ECI—
- Price$2.50 / $10.00
- Context128K
Too close to call
It is close. Our weighted score puts them within 1 points (Ember-1 36/100, Command A Plus 35/100, Aion-3.0 26/100), so choose by what matters most for your work: Aion-3.0 on price and Ember-1 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 priceAion-3.0Aion-3.0 $3.75 · Command A Plus $4.38 · Ember-1 $6.00 per 1M tokens (3:1 blend)
- Longest contextEmber-1Ember-1 1,048,576 · Aion-3.0 131,072 · Command A Plus 128,000 tokens
- Widest inputsEmber-1 and Command A PlusAion-3.0: Text · Ember-1: Text, Images · Command A Plus: Text, Images
- Self-hostingCommand A PlusPublishes downloadable weights
| Measure | Weight | Aion-3.0 | Ember-1 | Command A Plus |
|---|---|---|---|---|
| Price | 50% | 22 | 12 | 19 |
| Inputs & features | 30% | 35 | 60 | 70 |
| Context window | 20% | 25 | 61 | 24 |
| Overall | 100% | 26/100 | 36/100 | 35/100 |
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 | Aion-3.0Aion Labs | Ember-1Fireworks AI | Command A PlusCohere |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $3.00 | $3.00 | $2.50 (best) |
| Output | $6.00 (best) | $15.00 | $10.00 |
| Cached input | — | — | — |
| Blended (3:1) | $3.75 (best) | $6.00 | $4.38 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Median of 4 providers | Median of 7 providers | Official Cohere API |
| Limits | |||
| Context window | 131,072 tokens | 1,048,576 tokens (best) | 128,000 tokens |
| Max output | 32,768 tokens | 131,072 tokens (best) | 64,000 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | Yes | Yes |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | Yes | Yes | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | No | Yes |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | — | — | command-a-plus-05-2026 |
| API providers | 4 | 7 (best) | 3 |
| Released | May 5, 2026 | Sep 22, 2026 | May 20, 2026 |
| Knowledge cutoff | — | — | Apr 1, 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Aion-3.0$42.00
- Ember-1$60.00
- Command A Plus$45.00
Which should you choose?
Which is better: Aion-3.0, Ember-1 or Command A Plus?
It is close. Our weighted score puts them within 1 points (Ember-1 36/100, Command A Plus 35/100, Aion-3.0 26/100), so choose by what matters most for your work: Aion-3.0 on price and Ember-1 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, Aion-3.0, Ember-1 or Command A Plus?
Aion-3.0 is cheaper at $3.00 input / $6.00 output per million tokens (median across 4 API providers). Command A Plus costs $2.50 input / $10.00 output per million tokens (official Cohere API price); Ember-1 costs $3.00 input / $15.00 output per million tokens (median across 7 API providers). At a typical mix of three input tokens to one output token, that is $3.75 per million tokens for Aion-3.0 versus $4.38 for Command A Plus (1.2× as much) and $6.00 for Ember-1 (1.6× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Aion-3.0 has not been scored yet, Ember-1 has not been scored yet and Command A Plus has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Aion-3.0, Ember-1 and Command A Plus 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?
Ember-1 has the largest context window at 1,048,576 tokens, against 131,072 for Aion-3.0 and 128,000 for Command A Plus. Maximum output per response: Aion-3.0 up to 32,768, Ember-1 up to 131,072, Command A Plus up to 64,000 tokens.
Which can read images, PDFs, audio or video?
Aion-3.0 accepts text; Ember-1 accepts text and images; Command A Plus accepts text and images. Ember-1 handles the widest range of inputs.
Are any of these open source?
Command A Plus publishes its weights and can be self-hosted; Aion-3.0 and Ember-1 is proprietary.
Which is newer?
Ember-1 is the newest, released Sep 22, 2026. Command A Plus came out May 20, 2026; Aion-3.0 came out May 5, 2026. Knowledge cutoff: Command A Plus Apr 1, 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 Nov 2, 2026.
