Claude Opus 4 vs Jamba 1.5 Mini
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
Updated
Claude Opus 4 specs · Jamba 1.5 Mini specs- PriceJamba 1.5 Mini
Jamba 1.5 Mini is roughly 187.5× cheaper on output tokens ($0.40 vs $75.00 per 1M).
- Context windowJamba 1.5 Mini
Jamba 1.5 Mini accepts 256K tokens vs 200K, 1.3× the room for long documents and codebases.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- ModalitiesClaude Opus 4
Claude Opus 4 supports 2 modalities (text, vision) vs 1 for Jamba 1.5 Mini.
- OpennessJamba 1.5 Mini
Jamba 1.5 Mini ships open weights (Jamba Open Model License); Claude Opus 4 is API-only.
On balance Jamba 1.5 Mini edges ahead, winning 3 of 5 categories against Claude Opus 4's 1. Jamba 1.5 Mini is roughly 187.5× cheaper on output tokens ($0.40 vs $75.00 per 1M). Jamba 1.5 Mini accepts 256K tokens vs 200K, 1.3× the room for long documents and codebases.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, Claude Opus 4 handles text, vision while Jamba 1.5 Mini handles text, which can be the deciding factor before you even look at benchmarks. Jamba 1.5 Mini ships open weights (Jamba Open Model License); Claude Opus 4 is API-only.
Claude Opus 4 is the newer of the two, released 9 months after Jamba 1.5 Mini, which usually means a more recent knowledge cutoff and updated safety post-training. Claude Opus 4 is usually picked for coding llm and coding agent workloads, while Jamba 1.5 Mini sees more deployments in long context and summarization. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | Claude Opus 4 | Jamba 1.5 Mini |
|---|---|---|
| Provider | Anthropic | AI21 |
| Released | May 2025 | Aug 2024 |
| Modalities | text, vision | text |
| Context window | 200K tokens | 256K tokens |
| Max output | , | , |
| Input · 1M | $15.00 / 1M tokens | $0.20 / 1M tokens |
| Output · 1M | $75.00 / 1M tokens | $0.40 / 1M tokens |
| Knowledge cutoff | 2025-03 | , |
| Open weights | No | Yes (Jamba Open Model License) |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day$158 vs $1.20
- Heavy usage, 1M in / 500k out per day$1,575 vs $12.00
- RAG workload, 5M in / 200k out per day$2,700 vs $32.40
Light usage, 100k in / 50k out per day: $158 vs $1.20 per month, model B comes out ahead. Heavy usage, 1M in / 500k out per day: $1,575 vs $12.00 per month, model B comes out ahead. RAG workload, 5M in / 200k out per day: $2,700 vs $32.40 per month, model B comes out ahead.
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- Claude Opus 4$5.25
- Jamba 1.5 Mini$0.040
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
- HumanEval95.0
- SWE-bench Verified72.5
Claude Opus 4 fits when…
- Set the SWE-bench bar at launch
- Excellent for writing and code
- Strong long-context handling
- Multimodal needs covering vision.
Jamba 1.5 Mini fits when…
- 256k context at small-model price
- Hybrid SSM-Transformer is efficient on long inputs
- Open weights for self-hosting
- Cost-sensitive workloads, 187.5× cheaper than Claude Opus 4 on output tokens.
- Self-hosting and on-prem requirements, open weights (Jamba Open Model License).
Consider Claude Opus 4.7
Anthropic's mid-2026 flagship, ahead on SWE-bench, agent reliability, and writing quality.
Frequently asked
Is Claude Opus 4 or Jamba 1.5 Mini cheaper?
Jamba 1.5 Mini is cheaper at $0.40 / 1M tokens per million output tokens, vs $75.00 / 1M tokens for Claude Opus 4.Which has the larger context window?
Jamba 1.5 Mini accepts 256K tokens vs 200K for Claude Opus 4.Is Claude Opus 4 or Jamba 1.5 Mini better for coding?
Both Claude Opus 4 and Jamba 1.5 Mini are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Jamba 1.5 Mini ships open weights (Jamba Open Model License). Claude Opus 4 is API-only.When were Claude Opus 4 and Jamba 1.5 Mini released?
Claude Opus 4 was released by Anthropic on 2025-05-22. Jamba 1.5 Mini was released by AI21 on 2024-08-22.
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