Model Comparison

GPT-4 vs Jamba 1.5 MiniWhich is better in 2026?

GPT-4 significantly outperforms across most benchmarks. Jamba 1.5 Mini is 150.0x cheaper per token.

Verdict: GPT-4 vs Jamba 1.5 Mini — which is better?

GPT-4 (by OpenAI) and Jamba 1.5 Mini (by AI21 Labs) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

GPT-4 outperforms in 2 benchmarks (GPQA, MMLU), while Jamba 1.5 Mini is better at 0 benchmarks. GPT-4 significantly outperforms across most benchmarks.

On price, Jamba 1.5 Mini is roughly 150.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Jamba 1.5 Mini also accepts a larger context window (256,144 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-4 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks

Choose Jamba 1.5 Mini if…

  • cost matters — it's about 150.0x cheaper per token
  • you process long inputs — it offers a 256,144 token context window
  • you want the most recent training data — it shipped Aug 2024
  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GPT-4 outperforms in 2 benchmarks (GPQA, MMLU), while Jamba 1.5 Mini is better at 0 benchmarks.

GPT-4 significantly outperforms across most benchmarks.

Mon Jun 08 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-4 ($30.00/1M tokens) is 150.0x more expensive than Jamba 1.5 Mini ($0.20/1M tokens).

For output processing, GPT-4 ($60.00/1M tokens) is 150.0x more expensive than Jamba 1.5 Mini ($0.40/1M tokens).

In conclusion, GPT-4 is more expensive than Jamba 1.5 Mini.*

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

Lowest available price from all providers
Mon Jun 08 2026 • llm-stats.com
OpenAI
GPT-4
Input tokens$30.00
Output tokens$60.00
Best providerAzure
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

Jamba 1.5 Mini accepts 256,144 input tokens compared to GPT-4's 32,768 tokens. Jamba 1.5 Mini can generate longer responses up to 256,144 tokens, while GPT-4 is limited to 32,768 tokens.

OpenAI
GPT-4
Input32,768 tokens
Output32,768 tokens
AI21 Labs
Jamba 1.5 Mini
Input256,144 tokens
Output256,144 tokens
Mon Jun 08 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4 supports multimodal inputs, whereas Jamba 1.5 Mini does not.

GPT-4 can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-4

Text
Images
Audio
Video

Jamba 1.5 Mini

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-4 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-4

Proprietary

Closed source

Jamba 1.5 Mini

Jamba Open Model License

Open weights

Release Timeline

When each model was launched

GPT-4 was released on 2023-06-13, while Jamba 1.5 Mini was released on 2024-08-22.

Jamba 1.5 Mini is 15 months newer than GPT-4.

GPT-4

Jun 13, 2023

3.0 years ago

Jamba 1.5 Mini

Aug 22, 2024

1.8 years ago

1.2yr newer

Knowledge Cutoff

When training data ends

GPT-4 has a knowledge cutoff of 2022-12-31, while Jamba 1.5 Mini has a cutoff of 2024-03-05.

Jamba 1.5 Mini has more recent training data (up to 2024-03-05), making it potentially better informed about events through that date compared to GPT-4 (2022-12-31).

GPT-4

Dec 2022

Jamba 1.5 Mini

Mar 2024

1.3 yr newer

Provider Availability

GPT-4 is available from Azure, OpenAI. Jamba 1.5 Mini is available from Bedrock, Google.

GPT-4

azure logo
Azure
Input Price:Input: $30.00/1MOutput Price:Output: $60.00/1M
openai logo
OpenAI
Input Price:Input: $30.00/1MOutput Price:Output: $60.00/1M

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

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Supports multimodal inputs
Higher GPQA score (35.7% vs 32.3%)
Higher MMLU score (86.4% vs 69.7%)
AI21 Labs
Larger context window (256,144 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4
AI21 Labs
Jamba 1.5 Mini

FAQ

Common questions about GPT-4 vs Jamba 1.5 Mini.

Which is better, GPT-4 or Jamba 1.5 Mini?

GPT-4 significantly outperforms across most benchmarks. GPT-4 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.

How does GPT-4 compare to Jamba 1.5 Mini in benchmarks?

GPT-4 scores AI2 Reasoning Challenge (ARC): 96.3%, HellaSwag: 95.3%, Uniform Bar Exam: 90.0%, SAT Math: 89.0%, LSAT: 88.0%. Jamba 1.5 Mini scores ARC-C: 85.7%, GSM8k: 75.8%, MMLU: 69.7%, TruthfulQA: 54.1%, Arena Hard: 46.1%.

Is GPT-4 cheaper than Jamba 1.5 Mini?

Jamba 1.5 Mini is 150.0x cheaper for input tokens. GPT-4 costs $30.00/M input and $60.00/M output via azure. Jamba 1.5 Mini costs $0.20/M input and $0.40/M output via bedrock.

What are the context window sizes for GPT-4 and Jamba 1.5 Mini?

GPT-4 supports 33K 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.

What are the main differences between GPT-4 and Jamba 1.5 Mini?

Key differences include context window (33K vs 256K), input pricing ($30.00 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.

Who makes GPT-4 and Jamba 1.5 Mini?

GPT-4 is developed by OpenAI and Jamba 1.5 Mini is developed by AI21 Labs.

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