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GPT-4.5 vs Jamba 1.5 Large
Comprehensive side-by-side LLM comparison
GPT-4.5 leads with 17.4% higher average benchmark score. Jamba 1.5 Large offers 379.9K more tokens in context window than GPT-4.5. Jamba 1.5 Large is $215.00 cheaper per million tokens. GPT-4.5 supports multimodal inputs. Overall, GPT-4.5 is the stronger choice for coding tasks.
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OpenAI
GPT-4.5 was developed as an intermediate advancement between GPT-4 and GPT-5, designed to incorporate incremental improvements in reasoning, factuality, and instruction-following. Built to bridge generational capabilities while maintaining compatibility with existing applications, it represents a refinement of the GPT-4 architecture with enhanced performance characteristics.
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AI21 Labs
Jamba 1.5 Large was developed by AI21 Labs using a hybrid architecture combining transformer and state space models, designed to provide efficient long-context understanding. Built to handle extended documents and conversations with computational efficiency, it represents AI21's innovation in efficient large-scale model design.
6 months newer
Jamba 1.5 Large
AI21 Labs
2024-08-22
GPT-4.5
OpenAI
2025-02-27
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Pricing Comparison
Cost per million tokens (USD)
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GPT-4.5
Input:$75.00
Output:$150.00
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Jamba 1.5 Large
Input:$2.00
Output:$8.00($215.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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GPT-4.5
Average Score:85.8%(+17.4%)
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Jamba 1.5 Large
Average Score:68.4%
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Knowledge Cutoff
Training data recency comparison
Jamba 1.5 Large
2024-03-05
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT-4.5
1 providers
OpenAI
Throughput: 50 tok/s
Latency: 20ms
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Jamba 1.5 Large
2 providers
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GPT-4.5
Avg Score:85.8%(+17.4%)
Providers:1
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Jamba 1.5 Large
Avg Score:68.4%
Providers:2