Grok 4 vs Qwen3 Next 80B A3b Instruct
Grok 4 (Azure AI Foundry, 131,072-token context) versus Qwen3 Next 80B A3b Instruct (Alibaba DashScope, 262,144-token context). Qwen3 Next 80B A3b Instruct is cheaper by 93% on a blended token mix. Grok 4 uniquely supports structured output (json schema). Across 1 public benchmark we tracked, Grok 4 wins 1 and Qwen3 Next 80B A3b Instruct wins 0. Use the live calculator below to plug your real usage shape into both, then route the winner via Agent Command Center for shadow A/B without code changes.
Bottom line — Grok 4 vs Qwen3 Next 80B A3b Instruct
Grok 4 and Qwen3 Next 80B A3b Instruct target overlapping workloads but differ sharply on economics. Qwen3 Next 80B A3b Instruct runs roughly 93% cheaper on a blended input-plus-output token mix, which translates to approximately $16,830 per month at mid-market volume (100K requests/day). The gap compounds at enterprise scale, making the cost axis the first filter most teams apply when deciding between these two models.
Qwen3 Next 80B A3b Instruct ships a 262,144-token context window, 2.0x larger than Grok 4's 131,072 tokens. That headroom matters for long-document RAG pipelines, multi-turn agent sessions that accumulate tool-call history, and codebases where the entire repository needs to fit in a single prompt. If your average prompt stays under 131,072 tokens, the extra context on Qwen3 Next 80B A3b Instruct is insurance you may never use — and Grok 4 may win on other axes.
On capability surface area, the models diverge: Grok 4 supports structured output (json schema) where the other does not. These differences are binary — either your workload needs the capability or it does not. Check whether any critical path in your agent pipeline depends on a capability only one model provides before committing to a migration.
For teams evaluating both models, the recommended path is a shadow A/B test: route production traffic through an OpenAI-compatible gateway, mirror a percentage to the candidate model, score both responses with an automated evaluator (faithfulness, tool-call correctness, latency), and compare cohort-level metrics over two weeks. Future AGI Agent Command Center supports this pattern with a single `base_url` change and built-in evaluators from the ai-evaluation SDK.
Live workload comparison
Same workload run through both models. The cheaper one is highlighted.
strategy: cost-optimized
primary:
model: qwen3-next-80b-a3b-instruct
provider: dashscope
fallback:
model: grok-4
provider: azure-ai-foundry
shadow: { sample_rate: 0.05 } # mirror 5% of traffic to compare quality live| Grok 4 | Qwen3 Next 80B A3b Instruct | |
|---|---|---|
| Input price | $3.00/M | $0.150/M |
| Output price | $15.00/M | $1.20/M |
| Context window | 131,072 | 262,144 |
| Max output | 131,072 | 65,536 |
| Function calling | ✓ | ✓ |
| Vision | — | — |
| Audio input | — | — |
| Reasoning | — | — |
| Prompt caching | — | — |
| Structured output | ✓ | — |
| Pricing verified | Aug 6, 2026 | Aug 6, 2026 |
Benchmark comparison
Side-by-side public benchmark scores. Greener bar = winner.
Cost at scale: monthly spend at three usage volumes
Estimated monthly cost assuming 1,000 input + 200 output tokens per request — a realistic chat-agent shape. Adjust your own usage in the calculator at the top of this page for an exact number.
| Scale | Grok 4 | Qwen3 Next 80B A3b Instruct | Delta |
|---|---|---|---|
| Startup 10K requests/day | $1,800 /mo | $117 /mo | $1,683/mo |
| Mid-market 100K requests/day | $18,000 /mo | $1,170 /mo | $16,830/mo |
| Enterprise 1M requests/day | $180,000 /mo | $11,700 /mo | $168,300/mo |
At enterprise scale (1M requests/day), a difference of even ~10% in unit price compounds into thousands of dollars per month. Cached input pricing and batch tiers can shift this further — both are surfaced on each model's own page.
When to choose which
Picked from the data above — not vendor marketing. Match the rules to your workload, not the other way around.
You're cost-sensitive at scale — Qwen3 Next 80B A3b Instruct runs ~93% cheaper on a blended in+out token mix, compounding into thousands of dollars per month at production volume.
Your workload needs long context — Qwen3 Next 80B A3b Instruct fits 262,144 tokens versus the other model's 131,072, enough headroom for full books, large codebases, or 100+ page documents in one shot.
On arena-elo, Grok 4 scores 58.0 points higher — if your workload pattern matches that benchmark's task shape, the gap is meaningful.
Capability diff — what you gain and lose on the swap
A specific list of what each model has that the other doesn't. If your workload depends on a row in Only Grok 4, switching to Qwen3 Next 80B A3b Instruct means re-architecting that path (and vice versa).
- • Structured output (JSON schema)
Capabilities both share (2)
- ✓ Function calling
- ✓ Streaming
Benchmark winners — by the numbers
For each public benchmark that has scores for both models, the higher score and the size of the gap. Benchmarks are noisy — treat anything under a 2-point delta as effectively tied.
| Benchmark | Grok 4 | Qwen3 Next 80B A3b Instruct | Winner | Δ |
|---|---|---|---|---|
| arena-elo | 1459.0 | 1401.0 | Grok 4 | +58.0 |
Migration considerations
Concrete differences to wire through your stack before you flip traffic from one to the other.
- Context window changes up 100% when moving from Grok 4 (131,072) to Qwen3 Next 80B A3b Instruct (262,144). Re-check any prompt that relies on cramming long history or documents.
- Max output tokens differ: 131,072 on Grok 4 vs 65,536 on Qwen3 Next 80B A3b Instruct. Long-form generation tasks may truncate differently — adjust streaming UI and chunking accordingly.
- Grok 4 has capabilities Qwen3 Next 80B A3b Instruct lacks: Structured output (JSON schema). Switching to Qwen3 Next 80B A3b Instruct means re-architecting any flow that depends on these.
- Provider changes from Azure AI Foundry to Alibaba DashScope. API authentication, rate-limit policy, regional availability, and billing all shift. Most teams route through an OpenAI-compatible gateway (e.g., Future AGI Agent Command Center) so the swap is a single `base_url` change instead of an SDK rewrite.
How to A/B test Grok 4 vs Qwen3 Next 80B A3b Instruct in production
If you're stuck between the two, run them side-by-side on real traffic. Four steps the Future AGI team uses internally:
- 1. Point your existing OpenAI SDK at
https://gateway.futureagi.com/v1. No code change beyondbase_urland a virtual key. - 2. Mark Grok 4 primary, mirror 20% of traffic to Qwen3 Next 80B A3b Instruct in shadow mode. Both responses are logged; only the primary is served to users.
- 3. Score every shadow response with an evaluator — faithfulness, tool-call correctness, response latency, cost. Built-in evaluators in ai-evaluation cover the common axes.
- 4. Compare cohort-level metrics after two weeks. Switch primary when the candidate wins on what matters to your workload — and stays within your latency budget.
Full walkthrough on the Agent Command Center page.
FAQ — Grok 4 vs Qwen3 Next 80B A3b Instruct
Which is cheaper, Grok 4 or Qwen3 Next 80B A3b Instruct? ▾
Qwen3 Next 80B A3b Instruct is cheaper by roughly 93% on a blended input + output token mix. Input prices are $3.00/M for Grok 4 versus $0.150/M for Qwen3 Next 80B A3b Instruct; output prices are $15.00/M versus $1.20/M. The exact savings depend on your input:output ratio — use the live calculator above to plug in your own request shape.
What is the context window of Grok 4 versus Qwen3 Next 80B A3b Instruct? ▾
Grok 4 supports up to 131,072 tokens of context. Qwen3 Next 80B A3b Instruct supports up to 262,144 tokens. Qwen3 Next 80B A3b Instruct has the larger window by a factor of 2.0x, which matters for long-document RAG, multi-turn agent sessions, and tasks that need to keep an entire codebase in working memory.
Do Grok 4 and Qwen3 Next 80B A3b Instruct both support tool calling? ▾
Yes — both Grok 4 and Qwen3 Next 80B A3b Instruct support native function calling. Both also support structured output via JSON schema, so an agent can be ported between them with the same tool definitions.
When should I choose Grok 4 over Qwen3 Next 80B A3b Instruct? ▾
On arena-elo, Grok 4 scores 58.0 points higher — if your workload pattern matches that benchmark's task shape, the gap is meaningful.
When should I choose Qwen3 Next 80B A3b Instruct over Grok 4? ▾
You're cost-sensitive at scale — Qwen3 Next 80B A3b Instruct runs ~93% cheaper on a blended in+out token mix, compounding into thousands of dollars per month at production volume. Your workload needs long context — Qwen3 Next 80B A3b Instruct fits 262,144 tokens versus the other model's 131,072, enough headroom for full books, large codebases, or 100+ page documents in one shot.
How do I A/B test Grok 4 against Qwen3 Next 80B A3b Instruct in production? ▾
Route both through an OpenAI-compatible gateway like Future AGI Agent Command Center with shadow mode enabled. Send 100% of traffic to your primary model, mirror 10–20% to the candidate, score every response with an evaluator (faithfulness, tool-call correctness, response time), and compare cohort-level metrics for two weeks. Switch when the candidate wins on the metrics that matter to your workload and stays within your latency budget.