GPT-6 Astra vs Gemini 3.8 Flash
Compare GPT-6 Astra vs Gemini 3.8 Flash API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
GPT-6 Astra charges $10.00/1M input and $50.00/1M output tokens, compared to Gemini 3.8 Flash at $0.75/1M input and $3.75/1M output. Gemini 3.8 Flash is 13.3x cheaper on input tokens. In reasoning benchmarks, GPT-6 Astra holds the higher AA Intelligence Index rating (57/100). For latency-critical streaming, GPT-6 Astra delivers 47 t/s (192.0s TTFT) while Gemini 3.8 Flash provides 113 t/s (20.0s TTFT).
Full Metric & Specification Comparison
| Metric | GPT-6 Astra | Gemini 3.8 Flash | Advantage |
|---|---|---|---|
| Provider | OpenAI | - | |
| Input Token Cost (1M) | $10.000 | $0.750 | Gemini 3.8 Flash |
| Output Token Cost (1M) | $50.000 | $3.750 | Gemini 3.8 Flash |
| Context Window | 1,050k tokens | 1,000k tokens | GPT-6 Astra |
| AA Intelligence Index | 57/100 | 31/100 | GPT-6 Astra |
| Streaming Latency | Deliberate | Fast | - |
Key Architectural Takeaways
- Input Token Cost: GPT-6 Astra is $10.00/1M vs Gemini 3.8 Flash at $0.75/1M
- Output Token Cost: GPT-6 Astra is $50.00/1M vs Gemini 3.8 Flash at $3.75/1M
- Context Window: GPT-6 Astra supports 1,050k tokens vs Gemini 3.8 Flash with 1,000k tokens
- Benchmark Intelligence Rating: GPT-6 Astra scores 57/100 vs Gemini 3.8 Flash at 31/100 (AA Index v5)
- Inference Latency: GPT-6 Astra is rated Deliberate vs Gemini 3.8 Flash rated Fast
Calculate Your Team's Exact Bill Difference
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Deploying Gemini 3.8 Flash over GPT-6 Astra saves $485.63/mo ($5828/yr) at this volume.
Frequently Asked Questions
Is GPT-6 Astra cheaper than Gemini 3.8 Flash?
Gemini 3.8 Flash is significantly more economical, charging $0.75/1M input compared to $10.00/1M for GPT-6 Astra.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose Gemini 3.8 Flash. If you require peak reasoning accuracy and complex tool use, GPT-6 Astra is recommended.
How does context window compare between GPT-6 Astra and Gemini 3.8 Flash?
GPT-6 Astra offers the larger context window (1,050k tokens), allowing you to pass significantly larger codebases or documents without chunking.
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