AI Models · Open-Source vs Paid

Step 5 Preview Open vs Saba Paid

Step 5 Preview vs Saba compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.

Prices & specs refreshed from live data · olud.ai

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

Step 5 PreviewOpenStepfun
$1 /M input
$2.7 /M outputNo per-token fees if you self-host
TypeOpen-weight
Context window1M tokens
MultimodalYes
Self-hostYes
SabaPaidMistral AI
$0.2 /M input
$0.6 /M outputManaged API (no infra to run)
TypeProprietary
Context window33K tokens
MultimodalNo
Self-hostNo
Choose Step 5 Preview if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Saba if you want frontier capability through a managed API with zero infrastructure to run.

Step 5 Preview vs Saba specs

SpecStep 5 PreviewSabaWinner
MakerStepfunMistral AI–
TypeOpen-weightProprietaryStep 5 Preview
Context window1M tokens33K tokensStep 5 Preview
Input price$1/M · free self-host$0.2/MSaba
Output price$2.7/M · free self-host$0.6/MSaba
Vision / multimodalYesNoStep 5 Preview
Tool / function callingYesYes= Tie
Self-hostableYesNo (API only)Step 5 Preview
LicenseOpen weightsProprietaryStep 5 Preview

Price gap & when to choose each

4.5×cheaper per output token

Saba is ~4.5× cheaper than Step 5 Preview on output tokens ($0.6 vs $2.7 per M tokens).

Choose Step 5 Preview if…
  • You want to self-host or run on your cloud
  • You need the longer 1M context window
  • You prioritize data privacy & control
  • You are building open or reproducible AI
Choose Saba if…
  • You want frontier performance through a managed API
  • You want the lower output price
  • You value reliability & ecosystem
  • You don't want to manage infrastructure

Feature comparison

CapabilityStep 5 PreviewSaba
Open weights (downloadable)✓✗
Self-hostable✓✗
Runs fully offline✓✗
Vision / multimodal✓✗
Tool / function calling✓✓
1M+ context window✓✗

Benchmarks: Step 5 Preview vs Saba

Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).

Step 5 Preview
Saba
Intelligence index
43.7
6.5
Humanity's Last Exam
46.5%
4.3%
Long Context Reasoning
88.3%
–
SciCode
58.9%
–
GPQA
–
42.4%
MMLU-Pro
–
61.1%
MATH-500
–
67.7%
AIME
–
13%
Speed
201.5 tok/s
0 tok/s
Latency
0.87s
0s
Intelligence per $
30.7
–

Benchmark data by Artificial Analysis.

How Step 5 Preview and Saba score

🏆 Best value & openness: Step 5 Preview (4.9 vs 2.7 / 5)
CriterionStep 5 PreviewSaba
Cost-efficiency4.55.0
Context window5.02.5
Openness5.01.5
Self-hosting5.01.0
Multimodality5.03.5

Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.

What each model is

Step 5 Preview Open

Stepfun · Open-weight

Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...

Saba Paid

Mistral AI · Proprietary

Mistral Saba is a 24B-parameter language model specifically designed for the Middle East and South Asia, delivering accurate and contextually relevant responses while maintaining efficient performance. Trained on curated regional...

Other models in these families

These variants are tracked but not compared here — one page per family keeps the comparison readable.

Other variants tracked
Step 3.7 FlashStep 3.5 Flash

Frequently asked questions

Is Step 5 Preview as good as Saba?

Step 5 Preview is open-weight and competitive on many tasks, but Saba may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.

Can I run Step 5 Preview locally?

Yes. Step 5 Preview has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. Saba is API-only and cannot be self-hosted.

Step 5 Preview vs Saba — which should I pick in 2026?

Choose Step 5 Preview if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Saba if you want frontier capability through a managed API with zero infrastructure to run.

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