Inception Mercury 2 (OpenRouter) vs Sonar Deep Research: API Cost Comparison
Compare the API pricing, context windows, features, and real-world cost projections for Inception Mercury 2 (OpenRouter) (OpenRouter) and Sonar Deep Research (Perplexity). Use the interactive calculator below to compute your exact monthly cost based on your token usage and request volume.
Prices verified Mar 10, 2026
Interactive Cost Calculator
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Showing costs for 2 models. Cheapest: Inception Mercury 2 (OpenRouter) at $6.25/month.
| Alert | |||||||
|---|---|---|---|---|---|---|---|
BestInception Mercury 2 (OpenRouter) | OpenRouter | $6.25 | $0.000625 | $2.50 | $3.75 | 89.6% | Alerts coming soon |
Sonar Deep Research | Perplexity | $60.00 | $0.006000 | $20.00 | $40.00 | — | Alerts coming soon |
Monthly Cost Comparison
Price Comparison at a Glance
All prices are in USD per 1 million tokens ($/M tokens). Lower is cheaper.
| Pricing Type | Inception Mercury 2 (OpenRouter) | Sonar Deep Research | Cheaper |
|---|---|---|---|
| Input (standard) | $0.25/M | $2.00/M | Inception Mercury 2 (OpenRouter) |
| Output | $0.75/M | $8.00/M | Inception Mercury 2 (OpenRouter) |
Prices last verified: 2026-03-10
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 | Inception Mercury 2 (OpenRouter)Monthly | Sonar Deep ResearchMonthly | Inception Mercury 2 (OpenRouter)Per request | Sonar Deep ResearchPer request |
|---|---|---|---|---|
| 1K requests/mo | $0.62 | $6.00 | $0.000625 | $0.006000 |
| 10K requests/mo | $6.25 | $60.00 | $0.000625 | $0.006000 |
| 100K requests/mo | $62.50 | $600.00 | $0.000625 | $0.006000 |
| 1M requests/mo | $625.00 | $6,000.00 | $0.000625 | $0.006000 |
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 Inception Mercury 2 (OpenRouter)
by OpenRouter
- Document summarization
- General chatbot
Input / 1M tokens
$0.25/M
Output / 1M tokens
$0.75/M
Context window
128,000
Tier
budget
When to Choose Sonar Deep Research
by Perplexity
- RAG / Semantic search
- Document summarization
Input / 1M tokens
$2.00/M
Output / 1M tokens
$8.00/M
Context window
127,072
Tier
reasoning
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 | Inception Mercury 2 (OpenRouter) | Sonar Deep Research |
|---|---|---|
| Context window | 128,000 tokens | 127,072 tokens |
| Max output tokens | 50,000 tokens | 8,192 tokens |
| Performance tier | Budget | Reasoning |
| Vision / image input | No | No |
| Function calling | No | No |
| JSON mode | No | No |
| Prompt caching | No | No |
| Batch API (50% discount) | No | No |
| Extended reasoning | No | Yes |
| Fine-tuning | No | No |
Inception Mercury 2 (OpenRouter) notes
OpenRouter offers 200+ models — showing top 15 unique models not available from other listed providers. Prices include OpenRouter markup.
Sonar Deep Research notes
Additional fees: $2/1M citation tokens, $3/1M reasoning tokens, $5 per 1,000 search queries. Designed for exhaustive research tasks.
Frequently Asked Questions
Is Inception Mercury 2 (OpenRouter) cheaper than Sonar Deep Research?
At standard usage (1,000 input tokens, 500 output tokens, 100,000 requests/month), Inception Mercury 2 (OpenRouter) costs $62.50/month versus $600.00/month for Sonar Deep Research — a 90% 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, Inception Mercury 2 (OpenRouter) or Sonar Deep Research?
Inception Mercury 2 (OpenRouter) has a larger context window at 128,000 tokens, compared to 127,072 tokens for Sonar Deep Research. A larger context window is important for processing long documents, multi-turn conversations, or large codebases without truncation.
Do Inception Mercury 2 (OpenRouter) and Sonar Deep Research support the Batch API?
Neither Inception Mercury 2 (OpenRouter) nor Sonar Deep Research currently supports a batch API with discounted pricing. For batch-eligible alternatives, consider models from OpenAI, Anthropic, or Google that include batch API support.
Which model offers better prompt caching?
Neither Inception Mercury 2 (OpenRouter) nor Sonar Deep Research currently supports prompt caching. For prompt-caching capable alternatives, consider Claude models from Anthropic or GPT-4o from OpenAI.
What are the best use cases for Inception Mercury 2 (OpenRouter) vs Sonar Deep Research?
Both models are well-suited for Document summarization. Inception Mercury 2 (OpenRouter) is particularly strong for General chatbot. Sonar Deep Research is favored for 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 Inception Mercury 2 (OpenRouter) vs Sonar Deep Research?
At 1,000 input tokens and 500 output tokens per request — a typical conversational workload — Inception Mercury 2 (OpenRouter) costs $0.000625 per request and Sonar Deep Research costs $0.006000 per request. At 100,000 requests/month, that translates to $62.50 and $600.00 respectively. Use the interactive calculator to adjust these parameters for your actual workload.
Inception Mercury 2 (OpenRouter) vs Sonar Deep Research: Summary
When comparing Inception Mercury 2 (OpenRouter) and Sonar Deep Research for API cost, the right choice depends on your workload's token profile, required features, and tolerance for latency. Inception Mercury 2 (OpenRouter) offers lower total cost at standard usage volumes (1,000 input + 500 output tokens per request at 100,000 requests/month) at $62.50/month, compared to $600.00/month for Sonar Deep Research.
Both models are priced in USD per million tokens, the standard unit across all major AI API providers. Inception Mercury 2 (OpenRouter) charges $0.25/M for input tokens and $0.75/M for output tokens. Sonar Deep Research charges $2.00/M input and $8.00/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.
Context window capacity differs between the two: Inception Mercury 2 (OpenRouter) supports up to 128,000 tokens in a single request, versus 127,072 tokens for Sonar Deep Research. 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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