Motif 3 vs Step 5 Preview
Step 5 Preview comes out ahead, 57 to 44 on our weighted score, though Motif 3 is 39% cheaper per token.
Motif Technologies
Motif 3
44/100- ECI—
- Price$0.50 / $2.00
- Context262K
- Our pick
StepFunStep 5 Preview
57/100- ECI—
- Price$1.00 / $2.70
- Context1M
Add a model
Make it a three-way comparison.
Step 5 Preview is our pick
Step 5 Preview is the better all-round choice, scoring 57/100 against Motif 3 (44). It leads on inputs & features and context window. Motif 3 wins on price. 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 priceMotif 3Motif 3 $0.875 · Step 5 Preview $1.43 per 1M tokens (3:1 blend)
- Longest contextStep 5 PreviewStep 5 Preview 1,000,000 · Motif 3 262,144 tokens
- Widest inputsStep 5 PreviewMotif 3: Text · Step 5 Preview: Text, Images, Video
- Self-hostingMotif 3Publishes downloadable weights (MIT)
| Measure | Weight | Motif 3 | Step 5 Preview |
|---|---|---|---|
| Price | 50% | 53 | 43 |
| Inputs & features | 30% | 35 | 80 |
| Context window | 20% | 37 | 60 |
| Overall | 100% | 44/100 | 57/100 |
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 | Motif 3Motif Technologies | Step 5 PreviewStepFun |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.50 (best) | $1.00 |
| Output | $2.00 (best) | $2.70 |
| Cached input | — | $0.05 |
| Blended (3:1) | $0.875 (best) | $1.43 |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 1 providers | Official StepFun (Global) API |
| Limits | ||
| Context window | 262,144 tokens | 1,000,000 tokens (best) |
| Max output | 262,144 tokens | 1,000,000 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | Yes |
| PDFs | No | No |
| Audio | No | No |
| Video | No | Yes |
| Reasoning | Yes | Yeslow · medium · high |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | OpenMIT | Proprietary |
| API model ID | — | step-5-preview |
| API providers | 1 | 7 (best) |
| Released | Aug 7, 2026 | Sep 16, 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.
- Motif 3$9.00
- Step 5 Preview$15.40
Which should you choose?
Which is better: Motif 3 or Step 5 Preview?
Step 5 Preview is the better all-round choice, scoring 57/100 against Motif 3 (44). It leads on inputs & features and context window. Motif 3 wins on price. 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, Motif 3 or Step 5 Preview?
Motif 3 is cheaper at $0.50 input / $2.00 output per million tokens (median across 1 API provider). Step 5 Preview costs $1.00 input / $2.70 output per million tokens (official StepFun (Global) API price). At a typical mix of three input tokens to one output token, that is $0.875 per million tokens for Motif 3 versus $1.43 for Step 5 Preview (1.6× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Motif 3 has not been scored yet and Step 5 Preview has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Motif 3 and Step 5 Preview yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Step 5 Preview has the largest context window at 1,000,000 tokens, against 262,144 for Motif 3. Maximum output per response: Motif 3 up to 262,144, Step 5 Preview up to 1,000,000 tokens.
Which can read images, PDFs, audio or video?
Motif 3 accepts text; Step 5 Preview accepts text, images and video. Step 5 Preview handles the widest range of inputs.
Are any of these open source?
Motif 3 publishes its weights (MIT) and can be self-hosted; Step 5 Preview is proprietary.
Which is newer?
Step 5 Preview is the newest, released Sep 16, 2026. Motif 3 came out Aug 7, 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.
