Gemini 2.5 Flash vs Together AI - Mistral Small 3
Gemini 2.5 Flash (2025) and Together AI - Mistral Small 3 (2026) are compact production models from Google DeepMind and MistralAI. Gemini 2.5 Flash ships a 1M-token context window, while Together AI - Mistral Small 3 ships a 33K-token context window. On pricing, Together AI - Mistral Small 3 costs $0.1/1M input tokens versus $0.3/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Together AI - Mistral Small 3 is ~200% cheaper at $0.1/1M; pay for Gemini 2.5 Flash only for coding workflow support.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-06-17 | 2026-01-20 |
| Context window | 1M | 33K |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Proprietary | Open Source |
| Knowledge cutoff | 2025-01 | - |
Pricing and availability
| Pricing attribute | Gemini 2.5 Flash | Together AI - Mistral Small 3 |
|---|---|---|
| Input price | $0.3/1M tokens | $0.1/1M tokens |
| Output price | $2.5/1M tokens | $0.3/1M tokens |
| Providers |
Capabilities
| Capability | Gemini 2.5 Flash | Together AI - Mistral Small 3 |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | No | No |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | Yes | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Gemini 2.5 Flash, multimodal input: Gemini 2.5 Flash, and code execution: Gemini 2.5 Flash. Both models share function calling, tool use, and structured outputs, 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, Gemini 2.5 Flash lists $0.3/1M input and $2.5/1M output tokens, while Together AI - Mistral Small 3 lists $0.1/1M input and $0.3/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Together AI - Mistral Small 3 lower by about $0.8 per million blended tokens. Availability is 4 providers versus 1, so concentration risk also matters.
Choose Gemini 2.5 Flash when coding workflow support, larger context windows, and broader provider choice are central to the workload. Choose Together AI - Mistral Small 3 when provider fit 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, Gemini 2.5 Flash or Together AI - Mistral Small 3?
Gemini 2.5 Flash supports 1M tokens, while Together AI - Mistral Small 3 supports 33K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Gemini 2.5 Flash or Together AI - Mistral Small 3?
Together AI - Mistral Small 3 is cheaper on tracked token pricing. Gemini 2.5 Flash costs $0.3/1M input and $2.5/1M output tokens. Together AI - Mistral Small 3 costs $0.1/1M input and $0.3/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Gemini 2.5 Flash or Together AI - Mistral Small 3 open source?
Gemini 2.5 Flash is listed under Proprietary. Together AI - Mistral Small 3 is listed under Open Source. 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, Gemini 2.5 Flash or Together AI - Mistral Small 3?
Gemini 2.5 Flash 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, Gemini 2.5 Flash or Together AI - Mistral Small 3?
Gemini 2.5 Flash 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 Gemini 2.5 Flash and Together AI - Mistral Small 3?
Gemini 2.5 Flash is available on Google AI Studio, GCP Vertex AI, Replicate API, and OpenRouter. Together AI - Mistral Small 3 is available on Together AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.