GPT-5.3 Codex vs Jamba 1.5 Large Comparison
Comparing GPT-5.3 Codex and Jamba 1.5 Large across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.3 Codex 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 Codex ($1.75/1M tokens) is 1.1x cheaper than Jamba 1.5 Large ($2.00/1M tokens).
For output processing, GPT-5.3 Codex ($14.00/1M tokens) is 1.8x more expensive than Jamba 1.5 Large ($8.00/1M tokens).
In conclusion, GPT-5.3 Codex 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
GPT-5.3 Codex accepts 400,000 input tokens compared to Jamba 1.5 Large's 256,000 tokens. Jamba 1.5 Large can generate longer responses up to 256,000 tokens, while GPT-5.3 Codex is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.3 Codex supports multimodal inputs, whereas Jamba 1.5 Large does not.
GPT-5.3 Codex can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.3 Codex
Jamba 1.5 Large
License
Usage and distribution terms
GPT-5.3 Codex 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 Codex was released on 2026-02-05, while Jamba 1.5 Large was released on 2024-08-22.
GPT-5.3 Codex is 18 months newer than Jamba 1.5 Large.
Feb 5, 2026
1 months ago
1.5yr newerAug 22, 2024
1.6 years ago
Knowledge Cutoff
When training data ends
Jamba 1.5 Large has a documented knowledge cutoff of 2024-03-05, while GPT-5.3 Codex's cutoff date is not specified.
We can confirm Jamba 1.5 Large's training data extends to 2024-03-05, but cannot make a direct comparison without GPT-5.3 Codex's cutoff date.
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Mar 2024
Provider Availability
GPT-5.3 Codex 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 Codex
Jamba 1.5 Large
Outputs Comparison
Key Takeaways
Jamba 1.5 Large
View detailsAI21 Labs
Detailed Comparison
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