GPT-5.3 Chat vs Jamba 1.5 Large Comparison
Comparing GPT-5.3 Chat and Jamba 1.5 Large across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.3 Chat and Jamba 1.5 Large 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
For input processing, GPT-5.3 Chat ($1.75/1M tokens) is 1.1x cheaper than Jamba 1.5 Large ($2.00/1M tokens).
For output processing, GPT-5.3 Chat ($14.00/1M tokens) is 1.8x more expensive than Jamba 1.5 Large ($8.00/1M tokens).
In conclusion, GPT-5.3 Chat is more expensive than Jamba 1.5 Large.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Jamba 1.5 Large accepts 256,000 input tokens compared to GPT-5.3 Chat's 128,000 tokens. Jamba 1.5 Large can generate longer responses up to 256,000 tokens, while GPT-5.3 Chat is limited to 16,384 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.3 Chat supports multimodal inputs, whereas Jamba 1.5 Large does not.
GPT-5.3 Chat can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.3 Chat
Jamba 1.5 Large
License
Usage and distribution terms
GPT-5.3 Chat is licensed under a proprietary license, while Jamba 1.5 Large uses Jamba Open Model License.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Jamba Open Model License
Open weights
Release Timeline
When each model was launched
GPT-5.3 Chat was released on 2026-03-04, while Jamba 1.5 Large was released on 2024-08-22.
GPT-5.3 Chat is 19 months newer than Jamba 1.5 Large.
Mar 4, 2026
1 weeks ago
1.5yr newerAug 22, 2024
1.6 years ago
Knowledge Cutoff
When training data ends
GPT-5.3 Chat has a knowledge cutoff of 2025-08-31, while Jamba 1.5 Large has a cutoff of 2024-03-05.
GPT-5.3 Chat has more recent training data (up to 2025-08-31), making it potentially better informed about events through that date compared to Jamba 1.5 Large (2024-03-05).
Aug 2025
1.4 yr newerMar 2024
Provider Availability
GPT-5.3 Chat is available from OpenAI. Jamba 1.5 Large is available from Bedrock, Google. The availability of providers can affect quality of the model and reliability.
GPT-5.3 Chat
Jamba 1.5 Large
Outputs Comparison
Key Takeaways
GPT-5.3 Chat
View detailsOpenAI
Jamba 1.5 Large
View detailsAI21 Labs
Detailed Comparison
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