Jamba 1.5 Large: Benchmarks, Pricing & Context Window
Jamba 1.5 Large is a language model from AI21 Labs, released in August 2024.
State-of-the-art hybrid SSM-Transformer instruction following foundation model, offering superior long context handling, speed, and quality.
Jamba 1.5 Large benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
High-confidence performance for Jamba 1.5 Large across real-world prompt categories. Only 95% intervals at most 4 points wide are shown.
Performance by conversation depth
How Jamba 1.5 Large holds up as conversations get longer.
Quality Tracker
Jamba 1.5 Large Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Sat Sep 12 2026Jamba 1.5 Large pricing
Providers
Jamba 1.5 Large starts at $2.00 per million input tokens and $8.00 per million output tokens via Bedrock. See all 2 providers below with their per-token pricing, latency, throughput, and modality support.
| Provider | Input $/M | Cached input $/M | Output $/M | Context in / out | TTFT p95 s | Output p5 c/s | Modalities in / out |
|---|---|---|---|---|---|---|---|
 Bedrock | $2.00 | — | $8.00 | 256.0K/256.0K | 0.50 | — | / |
 Google | $2.00 | — | $8.00 | 256.0K/256.0K | 0.30 | — | / |
Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.
Jamba 1.5 Large model size
Jamba 1.5 Large has 398 billion parameters. See how it compares to other models in the same parameter range.
Jamba 1.5 Large context window
Input and output token limits for Jamba 1.5 Large, plus how it ranks on long-context understanding.
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Jamba 1.5 Large latency
Jamba 1.5 Large time to first token, sustained output throughput, and failed-request rate from live model usage over the trailing 7 days.
Jamba 1.5 Large examples
Recent arena outputs from Jamba 1.5 Large, picked from the highest-ranked matchups.
Jamba 1.5 Large license
Jamba 1.5 Large is released under the Jamba Open Model License license, which restricts commercial use, has 398.0B parameters, has a knowledge cutoff of March 2024.
- License
- Jamba Open Model License
- Non-commercial
- Parameters
- 398.0B
- Knowledge cutoff
- March 2024
Jamba 1.5 Large resources
Official sources for Jamba 1.5 Large: provider documentation, official launch post, model weights.
Jamba 1.5 Large vs other models
The most-compared alternatives to Jamba 1.5 Large are Gemini 1.5 Flash, Hermes 3 405B, Qwen3 VL 4B Thinking. Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like Jamba 1.5 Large
Models ranked just above and below Jamba 1.5 Large by LLM Stats score.
FAQ
Common questions about Jamba 1.5 Large.