GPT-4 Vision Preview vs Mistral Medium 3.5
GPT-4 Vision Preview (2023) and Mistral Medium 3.5 (2026) are frontier reasoning models from OpenAI and MistralAI. GPT-4 Vision Preview ships a 128k-token context window, while Mistral Medium 3.5 ships a 256k-token context window. On pricing, Mistral Medium 3.5 costs $1.50/1M input tokens versus $10/1M 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 3.5 is ~567% cheaper at $1.50/1M; pay for GPT-4 Vision Preview only for coding workflow support.
Decision scorecard
Local evidence first| Signal | GPT-4 Vision Preview | Mistral Medium 3.5 |
|---|---|---|
| Best for | multimodal apps | reasoning-heavy apps, multimodal apps, and tool-calling agents |
| Decision fit | Coding, Agents, and Long context | Coding, RAG, and Agents |
| Context window | 128k | 256k |
| Cheapest output | $40/1M tokens | $7.50/1M tokens |
| Provider routes | 1 tracked | 3 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- GPT-4 Vision Preview uniquely exposes Code execution in local model data.
- Local decision data tags GPT-4 Vision Preview for Coding, Agents, and Long context.
- Mistral Medium 3.5 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Mistral Medium 3.5 has the lower cheapest tracked output price at $7.50/1M tokens.
- Mistral Medium 3.5 has broader tracked provider coverage for fallback and procurement flexibility.
- Mistral Medium 3.5 uniquely exposes Reasoning, Function calling, and Tool use in local model data.
- Local decision data tags Mistral Medium 3.5 for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
GPT-4 Vision Preview
$18,000
Cheapest tracked route/tier: Azure OpenAI
Mistral Medium 3.5
$3,075
Cheapest tracked route/tier: Mistral AI Studio
Estimated monthly gap: $14,925. 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 Vision Preview and Mistral Medium 3.5; plan for SDK, billing, or endpoint changes.
- Mistral Medium 3.5 is $32.50/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Code execution before moving production traffic.
- Mistral Medium 3.5 adds Reasoning, Function calling, and Tool use in local capability data.
- No overlapping tracked provider route is sourced for Mistral Medium 3.5 and GPT-4 Vision Preview; plan for SDK, billing, or endpoint changes.
- GPT-4 Vision Preview is $32.50/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Reasoning, Function calling, and Tool use before moving production traffic.
- GPT-4 Vision Preview adds Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2023-11-06 | 2026-04-29 |
| Context window | 128k | 256k |
| Parameters | 1.76T (8x222B MoE)* | 128B |
| Architecture | mixture of experts | decoder only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | 2023-04 | - |
Pricing and availability
| Pricing attribute | GPT-4 Vision Preview | Mistral Medium 3.5 |
|---|---|---|
| Input price | $10/1M tokens | $1.50/1M tokens |
| Output price | $40/1M tokens | $7.50/1M tokens |
| Providers |
Capabilities
| Capability | GPT-4 Vision Preview | Mistral Medium 3.5 |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | No | Yes |
| Function calling | No | Yes |
| Tool use | No | Yes |
| Structured outputs | No | Yes |
| Code execution | Yes | 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 reasoning mode: Mistral Medium 3.5, function calling: Mistral Medium 3.5, tool use: Mistral Medium 3.5, structured outputs: Mistral Medium 3.5, and code execution: GPT-4 Vision Preview. 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 Vision Preview lists $10/1M input and $40/1M output tokens on the cheapest tracked provider, while Mistral Medium 3.5 lists $1.50/1M input and $7.50/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Mistral Medium 3.5 lower by about $15.70 per million blended tokens. Availability is 1 providers versus 3, so concentration risk also matters.
Choose GPT-4 Vision Preview when coding workflow support are central to the workload. Choose Mistral Medium 3.5 when reasoning depth, 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.
FAQ
Which has a larger context window, GPT-4 Vision Preview or Mistral Medium 3.5?
Mistral Medium 3.5 supports 256k tokens, while GPT-4 Vision Preview supports 128k 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 Vision Preview or Mistral Medium 3.5?
Mistral Medium 3.5 is cheaper on tracked token pricing. GPT-4 Vision Preview costs $10/1M input and $40/1M output tokens. Mistral Medium 3.5 costs $1.50/1M input and $7.50/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is GPT-4 Vision Preview or Mistral Medium 3.5 open source?
GPT-4 Vision Preview is listed under Proprietary. Mistral Medium 3.5 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 Vision Preview or Mistral Medium 3.5?
Both GPT-4 Vision Preview and Mistral Medium 3.5 expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Which is better for multimodal input, GPT-4 Vision Preview or Mistral Medium 3.5?
Both GPT-4 Vision Preview and Mistral Medium 3.5 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 Vision Preview and Mistral Medium 3.5?
GPT-4 Vision Preview is available on Azure OpenAI. Mistral Medium 3.5 is available on Mistral AI Studio, OpenRouter, and Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.