Model Comparison

GPT-5 mini vs Jamba 1.5 Mini

GPT-5 mini significantly outperforms across most benchmarks. Jamba 1.5 Mini is 2.8x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-5 mini outperforms in 1 benchmarks (GPQA), while Jamba 1.5 Mini is better at 0 benchmarks.

GPT-5 mini significantly outperforms across most benchmarks.

Wed Apr 22 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Jamba 1.5 Mini costs less

For input processing, GPT-5 mini ($0.25/1M tokens) is 1.3x more expensive than Jamba 1.5 Mini ($0.20/1M tokens).

For output processing, GPT-5 mini ($2.00/1M tokens) is 5.0x more expensive than Jamba 1.5 Mini ($0.40/1M tokens).

In conclusion, GPT-5 mini is more expensive than Jamba 1.5 Mini.*

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

Lowest available price from all providers
Wed Apr 22 2026 • llm-stats.com
OpenAI
GPT-5 mini
Input tokens$0.25
Output tokens$2.00
Best providerOpenAI
AI21 Labs
Jamba 1.5 Mini
Input tokens$0.20
Output tokens$0.40
Best providerAWS Bedrock
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5 mini accepts 400,000 input tokens compared to Jamba 1.5 Mini's 256,144 tokens. Jamba 1.5 Mini can generate longer responses up to 256,144 tokens, while GPT-5 mini is limited to 128,000 tokens.

OpenAI
GPT-5 mini
Input400,000 tokens
Output128,000 tokens
AI21 Labs
Jamba 1.5 Mini
Input256,144 tokens
Output256,144 tokens
Wed Apr 22 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5 mini supports multimodal inputs, whereas Jamba 1.5 Mini does not.

GPT-5 mini can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5 mini

Text
Images
Audio
Video

Jamba 1.5 Mini

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5 mini is licensed under a proprietary license, while Jamba 1.5 Mini uses Jamba Open Model License.

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

GPT-5 mini

Proprietary

Closed source

Jamba 1.5 Mini

Jamba Open Model License

Open weights

Release Timeline

When each model was launched

GPT-5 mini was released on 2025-08-07, while Jamba 1.5 Mini was released on 2024-08-22.

GPT-5 mini is 12 months newer than Jamba 1.5 Mini.

GPT-5 mini

Aug 7, 2025

8 months ago

11mo newer
Jamba 1.5 Mini

Aug 22, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

GPT-5 mini has a knowledge cutoff of 2024-05-30, while Jamba 1.5 Mini has a cutoff of 2024-03-05.

GPT-5 mini has more recent training data (up to 2024-05-30), making it potentially better informed about events through that date compared to Jamba 1.5 Mini (2024-03-05).

GPT-5 mini

May 2024

2 mo newer
Jamba 1.5 Mini

Mar 2024

Provider Availability

GPT-5 mini is available from OpenAI. Jamba 1.5 Mini is available from Bedrock, Google.

GPT-5 mini

openai logo
OpenAI
Input Price:Input: $0.25/1MOutput Price:Output: $2.00/1M

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
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (400,000 tokens)
Supports multimodal inputs
Higher GPQA score (82.3% vs 32.3%)
AI21 Labs
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5 mini
AI21 Labs
Jamba 1.5 Mini

FAQ

Common questions about GPT-5 mini vs Jamba 1.5 Mini

GPT-5 mini significantly outperforms across most benchmarks. GPT-5 mini is made by OpenAI and Jamba 1.5 Mini is made by AI21 Labs. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-5 mini scores AIME 2025: 91.1%, HMMT 2025: 87.8%, GPQA: 82.3%, FrontierMath: 22.1%, Humanity's Last Exam: 16.7%. Jamba 1.5 Mini scores ARC-C: 85.7%, GSM8k: 75.8%, MMLU: 69.7%, TruthfulQA: 54.1%, Arena Hard: 46.1%.
Jamba 1.5 Mini is 1.3x cheaper for input tokens. GPT-5 mini costs $0.25/M input and $2.00/M output via openai. Jamba 1.5 Mini costs $0.20/M input and $0.40/M output via bedrock.
GPT-5 mini supports 400K tokens and Jamba 1.5 Mini supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (400K vs 256K), input pricing ($0.25 vs $0.20/M), multimodal support (yes vs no), licensing (Proprietary vs Jamba Open Model License). See the full comparison above for benchmark-by-benchmark results.
GPT-5 mini is developed by OpenAI and Jamba 1.5 Mini is developed by AI21 Labs.