DeepSeek V3.1 (Together AI) vs Gemini 2.5 Pro: API Cost Comparison
Compare the API pricing, context windows, features, and real-world cost projections for DeepSeek V3.1 (Together AI) (Together AI) and Gemini 2.5 Pro (Google). Use the interactive calculator below to compute your exact monthly cost based on your token usage and request volume.
Prices verified Mar 24, 2026
Interactive Cost Calculator
Fills in typical token counts for a workload type
Tokens in each prompt sent to the model
Tokens generated in each response
Total API calls per month
Showing costs for 2 models. Cheapest: DeepSeek V3.1 (Together AI) at $14.50/month.
| Alert | |||||||
|---|---|---|---|---|---|---|---|
BestDeepSeek V3.1 (Together AI) | Together AI | $14.50 | $0.001450 | $6.00 | $8.50 | 76.8% | Alerts coming soon |
Gemini 2.5 Pro | $62.50 | $0.006250 | $12.50 | $50.00 | — | Alerts coming soon |
Monthly Cost Comparison
Price Comparison at a Glance
All prices are in USD per 1 million tokens ($/M tokens). Lower is cheaper.
| Pricing Type | DeepSeek V3.1 (Together AI) | Gemini 2.5 Pro | Cheaper |
|---|---|---|---|
| Input (standard) | $0.60/M | $1.25/M | DeepSeek V3.1 (Together AI) |
| Output | $1.70/M | $10.00/M | DeepSeek V3.1 (Together AI) |
| Cached input | N/A | $0.13/M | — |
| Batch input | N/A | $0.63/M | — |
| Batch output | N/A | $5.00/M | — |
Prices last verified: 2026-03-06 – 2026-03-24
Cost Breakdown by Usage Volume
Estimated monthly costs at different request volumes, assuming 1,000 input tokens and 500 output tokens per request. Adjust in the calculator above for your specific use case.
| Volume | DeepSeek V3.1 (Together AI)Monthly | Gemini 2.5 ProMonthly | DeepSeek V3.1 (Together AI)Per request | Gemini 2.5 ProPer request |
|---|---|---|---|---|
| 1K requests/mo | $1.45 | $6.25 | $0.001450 | $0.006250 |
| 10K requests/mo | $14.50 | $62.50 | $0.001450 | $0.006250 |
| 100K requests/mo | $145.00 | $625.00 | $0.001450 | $0.006250 |
| 1M requests/mo | $1,450.00 | $6,250.00 | $0.001450 | $0.006250 |
Green values indicate the lower-cost option at each volume tier. Cost per request is calculated at 1,000 input + 500 output tokens using standard (non-batch, non-cached) pricing.
Price History
Input price per 1M tokensWhen to Choose DeepSeek V3.1 (Together AI)
by Together AI
- General chatbot
- Content & copywriting
- Code generation
Input / 1M tokens
$0.60/M
Output / 1M tokens
$1.70/M
Context window
65,536
Tier
mid
When to Choose Gemini 2.5 Pro
by Google
- Document summarization
- RAG / Semantic search
- Code generation
Input / 1M tokens
$1.25/M
Output / 1M tokens
$10.00/M
Context window
1,048,576
Tier
premium
Key Differences Beyond Price
Cost is only one factor in choosing an AI model. Context window size, rate limits, supported features, and latency all affect whether a model fits your use case.
| Capability | DeepSeek V3.1 (Together AI) | Gemini 2.5 Pro |
|---|---|---|
| Context window | 65,536 tokens | 1,048,576 tokens |
| Max output tokens | 8,192 tokens | 65,536 tokens |
| Performance tier | Mid | Premium |
| Vision / image input | No | Yes |
| Function calling | Yes | Yes |
| JSON mode | Yes | Yes |
| Prompt caching | No | Yes |
| Batch API (50% discount) | No | Yes |
| Extended reasoning | No | Yes |
| Fine-tuning | No | No |
| Rate limit (req/min) | Not published | 1,000 |
DeepSeek V3.1 (Together AI) notes
DeepSeek V3.1 via Together AI infrastructure.
Gemini 2.5 Pro notes
Tiered pricing: prompts over 200K tokens billed at $2.50 input / $15.00 output. Thinking tokens available.
Frequently Asked Questions
Is DeepSeek V3.1 (Together AI) cheaper than Gemini 2.5 Pro?
At standard usage (1,000 input tokens, 500 output tokens, 100,000 requests/month), DeepSeek V3.1 (Together AI) costs $145.00/month versus $625.00/month for Gemini 2.5 Pro — a 77% saving. Your actual savings will vary based on your token profile; output-heavy workloads amplify differences in output pricing.
Which model has a larger context window, DeepSeek V3.1 (Together AI) or Gemini 2.5 Pro?
Gemini 2.5 Pro has a larger context window at 1,048,576 tokens, compared to 65,536 tokens for DeepSeek V3.1 (Together AI). A larger context window is important for processing long documents, multi-turn conversations, or large codebases without truncation.
Do DeepSeek V3.1 (Together AI) and Gemini 2.5 Pro support the Batch API?
Gemini 2.5 Pro supports the Batch API (50% discount for async processing), while DeepSeek V3.1 (Together AI) does not. If your workload tolerates up to 24-hour latency, routing to Gemini 2.5 Pro with batch pricing could significantly cut costs versus DeepSeek V3.1 (Together AI)'s standard rate.
Which model offers better prompt caching?
Gemini 2.5 Pro supports prompt caching at $0.13/M for cached input, while DeepSeek V3.1 (Together AI) does not offer prompt caching. For RAG applications or chatbots with large, repeated context, Gemini 2.5 Pro's caching capability can substantially reduce effective costs.
What are the best use cases for DeepSeek V3.1 (Together AI) vs Gemini 2.5 Pro?
Both models are well-suited for Code generation. DeepSeek V3.1 (Together AI) is particularly strong for General chatbot, Content & copywriting. Gemini 2.5 Pro is favored for Document summarization, RAG / Semantic search. At the same quality level, the lower-cost model is usually preferable; use this page's calculator to compare total monthly spend at your volume.
What is the cost per request for DeepSeek V3.1 (Together AI) vs Gemini 2.5 Pro?
At 1,000 input tokens and 500 output tokens per request — a typical conversational workload — DeepSeek V3.1 (Together AI) costs $0.001450 per request and Gemini 2.5 Pro costs $0.006250 per request. At 100,000 requests/month, that translates to $145.00 and $625.00 respectively. Use the interactive calculator to adjust these parameters for your actual workload.
DeepSeek V3.1 (Together AI) vs Gemini 2.5 Pro: Summary
When comparing DeepSeek V3.1 (Together AI) and Gemini 2.5 Pro for API cost, the right choice depends on your workload's token profile, required features, and tolerance for latency. DeepSeek V3.1 (Together AI) offers lower total cost at standard usage volumes (1,000 input + 500 output tokens per request at 100,000 requests/month) at $145.00/month, compared to $625.00/month for Gemini 2.5 Pro.
Both models are priced in USD per million tokens, the standard unit across all major AI API providers. DeepSeek V3.1 (Together AI) charges $0.60/M for input tokens and $1.70/M for output tokens. Gemini 2.5 Pro charges $1.25/M input and $10.00/M output. If your workload is output-heavy (more tokens generated than consumed as input), the model with the lower output price compounds cost savings significantly at scale.
Prompt caching is supported by Gemini 2.5 Pro but not DeepSeek V3.1 (Together AI). For workloads with large, repeated system prompts or document context — such as RAG pipelines or multi-turn conversations with a fixed knowledge base — prompt caching can reduce effective input costs by 60–90%, which may change the cost ranking between these two models at your specific usage pattern.
Context window capacity differs between the two: Gemini 2.5 Pro supports up to 1,048,576 tokens in a single request, versus 65,536 tokens for DeepSeek V3.1 (Together AI). A larger context window is essential for document summarization, large codebase analysis, and multi-document retrieval-augmented generation (RAG) applications.
Use the interactive calculator at the top of this page to enter your actual token usage and monthly request volume for a precise cost comparison tailored to your workload. Adjust for batch API discounts and prompt caching to find the most cost-effective option for your specific deployment.
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