GPT-4 vs Mistral Medium 3 Instruct
GPT-4 (2023) and Mistral Medium 3 Instruct (2025) are compact production models from OpenAI and MistralAI. GPT-4 ships a 8k-token context window, while Mistral Medium 3 Instruct ships a 128k-token context window. On pricing, Mistral Medium 3 Instruct costs $0.40/1M input tokens versus $30/1M for the alternative. 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 is ~7400% cheaper at $0.40/1M; pay for GPT-4 only for coding workflow support.
Decision scorecard
Local evidence first| Signal | GPT-4 | Mistral Medium 3 Instruct |
|---|---|---|
| Best for | multimodal apps, tool-calling agents, and provider-routed production | multimodal apps and provider-routed production |
| Decision fit | Coding, Agents, and Vision | Long context and Vision |
| Context window | 8k | 128k |
| Cheapest output | $60/1M tokens | $2/1M tokens |
| Provider routes | 4 tracked | 2 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- GPT-4 has broader tracked provider coverage for fallback and procurement flexibility.
- GPT-4 uniquely exposes Function calling, Structured outputs, and Code execution in local model data.
- Local decision data tags GPT-4 for Coding, Agents, and Vision.
- Mistral Medium 3 Instruct has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Mistral Medium 3 Instruct has the lower cheapest tracked output price at $2/1M tokens.
- 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.
GPT-4
$39,000
Cheapest tracked route/tier: OpenAI API
Mistral Medium 3 Instruct
$820
Cheapest tracked route/tier: Mistral AI Studio
Estimated monthly gap: $38,180. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for GPT-4 and Mistral Medium 3 Instruct; plan for SDK, billing, or endpoint changes.
- Mistral Medium 3 Instruct is $58/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Function calling, Structured outputs, and Code execution before moving production traffic.
- No overlapping tracked provider route is sourced for Mistral Medium 3 Instruct and GPT-4; plan for SDK, billing, or endpoint changes.
- GPT-4 is $58/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- GPT-4 adds Function calling, Structured outputs, and Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2023-03-14 | 2025-10-01 |
| Context window | 8k | 128k |
| Parameters | 1.76T (8x222B MoE)* | — |
| Architecture | Mixture of Experts | Decoder Only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2021-09 | 2025-03 |
Pricing and availability
| Pricing attribute | GPT-4 | Mistral Medium 3 Instruct |
|---|---|---|
| Input price | $30/1M tokens | $0.40/1M tokens |
| Output price | $60/1M tokens | $2/1M tokens |
| Providers |
Capabilities
| Capability | GPT-4 | Mistral Medium 3 Instruct |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | No | No |
| Function calling | Yes | No |
| Tool use | No | No |
| Structured outputs | Yes | No |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
Deep dive
The capability footprint differs most on function calling: GPT-4, structured outputs: GPT-4, and code execution: GPT-4. Both models share vision and multimodal input, 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.
For cost, GPT-4 lists $30/1M input and $60/1M output tokens on the cheapest tracked provider, while Mistral Medium 3 Instruct lists $0.40/1M input and $2/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Mistral Medium 3 Instruct lower by about $38.12 per million blended tokens. Availability is 4 providers versus 2, so concentration risk also matters.
Choose GPT-4 when coding workflow support and broader provider choice are central to the workload. Choose Mistral Medium 3 Instruct when long-context analysis, larger context windows, and lower input-token cost 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, GPT-4 or Mistral Medium 3 Instruct?
Mistral Medium 3 Instruct supports 128k tokens, while GPT-4 supports 8k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, GPT-4 or Mistral Medium 3 Instruct?
Mistral Medium 3 Instruct is cheaper on tracked token pricing. GPT-4 costs $30/1M input and $60/1M output tokens. Mistral Medium 3 Instruct costs $0.40/1M input and $2/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is GPT-4 or Mistral Medium 3 Instruct open source?
GPT-4 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, GPT-4 or Mistral Medium 3 Instruct?
Both GPT-4 and Mistral Medium 3 Instruct expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, GPT-4 or Mistral Medium 3 Instruct?
Both GPT-4 and Mistral Medium 3 Instruct expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Where can I run GPT-4 and Mistral Medium 3 Instruct?
GPT-4 is available on OpenAI API, Azure OpenAI, Salesforce Einstein Generative AI, and OpenRouter. 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.
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Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.