GPT-4o (11-20) vs Mistral Small 4
GPT-4o (11-20) (2024) and Mistral Small 4 (2026) are compact production models from OpenAI and MistralAI. GPT-4o (11-20) ships a 128k-token context window, while Mistral Small 4 ships a 256k-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. It focuses on practical selection signals rather than broad model-family marketing.
Mistral Small 4 is safer overall; choose GPT-4o (11-20) when coding workflow support matters.
Decision scorecard
Local evidence first| Signal | GPT-4o (11-20) | Mistral Small 4 |
|---|---|---|
| Best for | multimodal apps | multimodal apps, tool-calling agents, and provider-routed production |
| Decision fit | Coding, Agents, and Long context | RAG, Agents, and Long context |
| Context window | 128k | 256k |
| Cheapest output | - | $0.30/1M tokens |
| Provider routes | 0 tracked | 3 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- GPT-4o (11-20) uniquely exposes Code execution in local model data.
- Local decision data tags GPT-4o (11-20) for Coding, Agents, and Long context.
- Mistral Small 4 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Mistral Small 4 has broader tracked provider coverage for fallback and procurement flexibility.
- Mistral Small 4 uniquely exposes Multimodal, Function calling, and Tool use in local model data.
- Local decision data tags Mistral Small 4 for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
GPT-4o (11-20)
Unavailable
No complete token price in local provider data
Mistral Small 4
$155
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 GPT-4o (11-20) and Mistral Small 4; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Code execution before moving production traffic.
- Mistral Small 4 adds Multimodal, Function calling, and Tool use in local capability data.
- No overlapping tracked provider route is sourced for Mistral Small 4 and GPT-4o (11-20); plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Multimodal, Function calling, and Tool use before moving production traffic.
- GPT-4o (11-20) adds Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-11-20 | 2026-03-16 |
| Context window | 128k | 256k |
| Parameters | 1.76T (8x222B MoE)* | 119B (6.5B active) |
| Architecture | Mixture of Experts | Mixture of Experts |
| License | Proprietary | Apache 2.0OSI-approved |
| Openness | Proprietary | Open source |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | 2023-10 | 2025-06 |
Pricing and availability
| Pricing attribute | GPT-4o (11-20) | Mistral Small 4 |
|---|---|---|
| Input price | - | $0.10/1M tokens |
| Output price | - | $0.30/1M tokens |
| Providers | - |
Capabilities
| Capability | GPT-4o (11-20) | Mistral Small 4 |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | No | Yes |
| Reasoning | No | No |
| Function calling | No | Yes |
| Tool use | No | Yes |
| Structured outputs | No | 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 multimodal input: Mistral Small 4, function calling: Mistral Small 4, tool use: Mistral Small 4, and code execution: GPT-4o (11-20). Both models share vision, 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: GPT-4o (11-20) has no token price sourced yet and Mistral Small 4 has $0.10/1M input tokens. Provider availability is 0 tracked routes versus 3. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose GPT-4o (11-20) when coding workflow support are central to the workload. Choose Mistral Small 4 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, GPT-4o (11-20) or Mistral Small 4?
Mistral Small 4 supports 256k tokens, while GPT-4o (11-20) supports 128k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is GPT-4o (11-20) or Mistral Small 4 open source?
GPT-4o (11-20) is listed under Proprietary. Mistral Small 4 is listed under Apache 2.0. 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-4o (11-20) or Mistral Small 4?
Both GPT-4o (11-20) and Mistral Small 4 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-4o (11-20) or Mistral Small 4?
Mistral Small 4 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.
Which is better for function calling, GPT-4o (11-20) or Mistral Small 4?
Mistral Small 4 has the clearer documented function calling signal in this comparison. If function calling is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run GPT-4o (11-20) and Mistral Small 4?
GPT-4o (11-20) is available on the tracked providers still being sourced. Mistral Small 4 is available on OpenRouter, 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.