Aquila Chat 2 70B Expressive vs Mistral Medium 3 Instruct
Aquila Chat 2 70B Expressive (2023) and Mistral Medium 3 Instruct (2025) are compact production models from Beijing Academy of Artificial Intelligence (BAAI) and MistralAI. Aquila Chat 2 70B Expressive ships a 2k-token context window, while Mistral Medium 3 Instruct ships a 128k-token context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Mistral Medium 3 Instruct fits 64x more tokens; pick it for long-context work and Aquila Chat 2 70B Expressive for tighter calls.
Decision scorecard
Local evidence first| Signal | Aquila Chat 2 70B Expressive | Mistral Medium 3 Instruct |
|---|---|---|
| Best for | general production evaluation | multimodal apps and provider-routed production |
| Decision fit | General | Long context and Vision |
| Context window | 2k | 128k |
| Cheapest output | - | $2/1M tokens |
| Provider routes | 0 tracked | 2 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Use Aquila Chat 2 70B Expressive when your own prompt tests beat the comparison signals; the local data does not show a decisive standalone advantage yet.
- Mistral Medium 3 Instruct has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Mistral Medium 3 Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Mistral Medium 3 Instruct uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Mistral Medium 3 Instruct for Long context and Vision.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Aquila Chat 2 70B Expressive
Unavailable
No complete token price in local provider data
Mistral Medium 3 Instruct
$820
Cheapest tracked route/tier: Mistral AI Studio
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Aquila Chat 2 70B Expressive and Mistral Medium 3 Instruct; plan for SDK, billing, or endpoint changes.
- Mistral Medium 3 Instruct adds Vision and Multimodal in local capability data.
- No overlapping tracked provider route is sourced for Mistral Medium 3 Instruct and Aquila Chat 2 70B Expressive; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2023-11-02 | 2025-10-01 |
| Context window | 2k | 128k |
| Parameters | 70B | — |
| Architecture | decoder only | decoder only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | - | 2025-03 |
Pricing and availability
| Pricing attribute | Aquila Chat 2 70B Expressive | Mistral Medium 3 Instruct |
|---|---|---|
| Input price | - | $0.40/1M tokens |
| Output price | - | $2/1M tokens |
| Providers | - |
Capabilities
| Capability | Aquila Chat 2 70B Expressive | Mistral Medium 3 Instruct |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Mistral Medium 3 Instruct and multimodal input: Mistral Medium 3 Instruct. Both models share the core language-model surface, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
Pricing coverage is uneven: Aquila Chat 2 70B Expressive has no token price sourced yet and Mistral Medium 3 Instruct has $0.40/1M input tokens. Provider availability is 0 tracked routes versus 2. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Aquila Chat 2 70B Expressive when provider fit are central to the workload. Choose Mistral Medium 3 Instruct when long-context analysis, larger context windows, and broader provider choice are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency.
FAQ
Which has a larger context window, Aquila Chat 2 70B Expressive or Mistral Medium 3 Instruct?
Mistral Medium 3 Instruct supports 128k tokens, while Aquila Chat 2 70B Expressive supports 2k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Aquila Chat 2 70B Expressive or Mistral Medium 3 Instruct open source?
Aquila Chat 2 70B Expressive is listed under Proprietary. Mistral Medium 3 Instruct is listed under Proprietary. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Aquila Chat 2 70B Expressive or Mistral Medium 3 Instruct?
Mistral Medium 3 Instruct has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, Aquila Chat 2 70B Expressive or Mistral Medium 3 Instruct?
Mistral Medium 3 Instruct has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Aquila Chat 2 70B Expressive and Mistral Medium 3 Instruct?
Aquila Chat 2 70B Expressive is available on the tracked providers still being sourced. Mistral Medium 3 Instruct is available on NVIDIA NIM and Mistral AI Studio. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Aquila Chat 2 70B Expressive over Mistral Medium 3 Instruct?
Mistral Medium 3 Instruct fits 64x more tokens; pick it for long-context work and Aquila Chat 2 70B Expressive for tighter calls. If your workload also depends on provider fit, start with Aquila Chat 2 70B Expressive; if it depends on long-context analysis, run the same evaluation with Mistral Medium 3 Instruct.
Continue comparing
Last reviewed: 2026-06-04. Data sourced from public model cards and provider documentation.