Compare / head-to-head
Jamba2 3Bvs
LongCat Flash Chat
Jamba2 3B leads 1 of 1 shared benchmark. Jamba2 3B has the larger context window (256K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 0
Jamba2 3B leads
Cheaper per token
—
list price, input + output
Larger context
Jamba2 3B
256K tokens
Providers
2 providers
AI21 Labs · Meituan LongCat
Jamba2 3B
AI21 Labs · released 2026-01-08
text
- Context
- 256K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 4 · 0 core
LongCat Flash Chat
Meituan LongCat · released 2025-09-01
text
- Context
- 128K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 32 · 9 core
Quality
Benchmark matrix
1 shared · 3 only Jamba2 3B · 30 only LongCat Flash Chat| Benchmark | Jamba2 3B | LongCat Flash Chat | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 1 | ||||
| IFEval | 93% ↗ | 89.65% ↗ | +3.3 pt | Jamba2 3B |
| Only Jamba2 3B reports · 3 | ||||
| Collie | 24% ↗ | not reported | — | — |
| FACTS | 54% ↗ | not reported | — | — |
| IFBench | 36% ↗ | not reported | — | — |
| Only LongCat Flash Chat reports · 30 | ||||
| SWE-bench Verified | not reported | 60.4% ↗ | — | — |
| GPQA Diamond | not reported | 73.23% ↗ | — | — |
| MMLU | not reported | 89.71% ↗ | — | — |
| MMLU-Pro | not reported | 82.68% ↗ | — | — |
| AIME 2025 | not reported | 61.25% ↗ | — | — |
| LMArena Elo | not reported | 1422.9 ↗ | — | — |
| AceBench | not reported | 76.1% ↗ | — | — |
| AIME 2024 | not reported | 70.42% ↗ | — | — |
| ArenaHard-V2 | not reported | 86.5% ↗ | — | — |
| BeyondAIME | not reported | 43% ↗ | — | — |
| C-Eval | not reported | 90.44% ↗ | — | — |
| CMMLU | not reported | 84.34% ↗ | — | — |
| COLLIE | not reported | 57.1% ↗ | — | — |
| DROP | not reported | 79.06% ↗ | — | — |
| GraphWalks-128k | not reported | 51.05% ↗ | — | — |
| HumanEval+ | not reported | 88.41% ↗ | — | — |
| LiveCodeBench | not reported | 48.02% ↗ | — | — |
| MATH500 | not reported | 96.4% ↗ | — | — |
| MBPP+ | not reported | 79.63% ↗ | — | — |
| Meeseeks-zh | not reported | 43.03% ↗ | — | — |
| Safety: Criminal | not reported | 91.24% ↗ | — | — |
| Safety: Harmful | not reported | 83.98% ↗ | — | — |
| Safety: Misinformation | not reported | 81.72% ↗ | — | — |
| Safety: Privacy | not reported | 93.98% ↗ | — | — |
| Tau2-Bench (airline) | not reported | 58% ↗ | — | — |
| Tau2-Bench (retail) | not reported | 71.27% ↗ | — | — |
| Tau2-Bench (telecom) | not reported | 73.68% ↗ | — | — |
| TerminalBench | not reported | 39.51% ↗ | — | — |
| VitaBench | not reported | 24.3% ↗ | — | — |
| ZebraLogic | not reported | 89.3% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Jamba2 3B minus LongCat Flash Chat in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Jamba2 3B | LongCat Flash Chat | Edge |
|---|---|---|---|
| Context window | 256K tokens | 128K tokens | Jamba2 3B |
| Max output | — | — | — |
| Input price / 1M | — | — | — |
| Output price / 1M | — | — | — |
| Cached input / 1M | — | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | — | — | — |
| Modalities | text | text | Tie |
| Released | 2026-01-08 | 2025-09-01 | — |
| Cited benchmark scores | 4 | 32 | — |
Reliability
Provider status
Live from /statusMore matchups
Jamba2 3B vs …
Models sharing the most benchmarksMore matchups
LongCat Flash Chat vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Jamba2 3B and LongCat Flash Chat on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.