Model Comparison

Jamba 1.5 Mini vs Step-3.5-Flash

Comparing Jamba 1.5 Mini and Step-3.5-Flash across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Jamba 1.5 Mini and Step-3.5-Flash don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Step-3.5-Flash costs less

For input processing, Jamba 1.5 Mini ($0.20/1M tokens) is 2.0x more expensive than Step-3.5-Flash ($0.10/1M tokens).

For output processing, Jamba 1.5 Mini ($0.40/1M tokens) costs the same as Step-3.5-Flash ($0.40/1M tokens).

In conclusion, Jamba 1.5 Mini is more expensive than Step-3.5-Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Apr 17 2026 • llm-stats.com
AI21 Labs
Jamba 1.5 Mini
Input tokens$0.20
Output tokens$0.40
Best providerAWS Bedrock
StepFun
Step-3.5-Flash
Input tokens$0.10
Output tokens$0.40
Best providerStepFun
Notice missing or incorrect data?Start an Issue→

Model Size

Parameter count comparison

144.0B diff

Step-3.5-Flash has 144.0B more parameters than Jamba 1.5 Mini, making it 276.9% larger.

AI21 Labs
Jamba 1.5 Mini
52.0Bparameters
StepFun
Step-3.5-Flash
196.0Bparameters
52.0B
Jamba 1.5 Mini
196.0B
Step-3.5-Flash

Context Window

Maximum input and output token capacity

Jamba 1.5 Mini accepts 256,144 input tokens compared to Step-3.5-Flash's 65,536 tokens. Jamba 1.5 Mini can generate longer responses up to 256,144 tokens, while Step-3.5-Flash is limited to 8,192 tokens.

AI21 Labs
Jamba 1.5 Mini
Input256,144 tokens
Output256,144 tokens
StepFun
Step-3.5-Flash
Input65,536 tokens
Output8,192 tokens
Fri Apr 17 2026 • llm-stats.com

License

Usage and distribution terms

Jamba 1.5 Mini is licensed under Jamba Open Model License, while Step-3.5-Flash uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Jamba 1.5 Mini

Jamba Open Model License

Open weights

Step-3.5-Flash

Apache 2.0

Open weights

Release Timeline

When each model was launched

Jamba 1.5 Mini was released on 2024-08-22, while Step-3.5-Flash was released on 2026-02-02.

Step-3.5-Flash is 18 months newer than Jamba 1.5 Mini.

Jamba 1.5 Mini

Aug 22, 2024

1.7 years ago

Step-3.5-Flash

Feb 2, 2026

2 months ago

1.4yr newer

Knowledge Cutoff

When training data ends

Jamba 1.5 Mini has a documented knowledge cutoff of 2024-03-05, while Step-3.5-Flash's cutoff date is not specified.

We can confirm Jamba 1.5 Mini's training data extends to 2024-03-05, but cannot make a direct comparison without Step-3.5-Flash's cutoff date.

Jamba 1.5 Mini

Mar 2024

Step-3.5-Flash

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Provider Availability

Jamba 1.5 Mini is available from Bedrock, Google. Step-3.5-Flash is available from StepFun.

Jamba 1.5 Mini

bedrock logo
AWS Bedrock
Input Price:Input: $0.20/1MOutput Price:Output: $0.40/1M
google logo
Google
Input Price:Input: $0.20/1MOutput Price:Output: $0.40/1M

Step-3.5-Flash

stepfun logo
StepFun
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

AI21 Labs
Larger context window (256,144 tokens)
StepFun
Less expensive input tokens

Detailed Comparison

AI Model Comparison Table
Feature
AI21 Labs
Jamba 1.5 Mini
StepFun
Step-3.5-Flash

FAQ

Common questions about Jamba 1.5 Mini vs Step-3.5-Flash

Jamba 1.5 Mini (AI21 Labs) and Step-3.5-Flash (StepFun) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.
Jamba 1.5 Mini scores ARC-C: 85.7%, GSM8k: 75.8%, MMLU: 69.7%, TruthfulQA: 54.1%, Arena Hard: 46.1%. Step-3.5-Flash scores AIME 2025: 97.3%, Tau-bench: 88.2%, LiveCodeBench v6: 86.4%, IMO-AnswerBench: 85.4%, SWE-Bench Verified: 74.4%.
Step-3.5-Flash is 2.0x cheaper for input tokens. Jamba 1.5 Mini costs $0.20/M input and $0.40/M output via bedrock. Step-3.5-Flash costs $0.10/M input and $0.40/M output via stepfun.
Jamba 1.5 Mini supports 256K tokens and Step-3.5-Flash supports 66K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (256K vs 66K), input pricing ($0.20 vs $0.10/M), licensing (Jamba Open Model License vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.
Jamba 1.5 Mini is developed by AI21 Labs and Step-3.5-Flash is developed by StepFun.