Grok 4.5 vs Mistral Medium 3.5
API pricing, context window and capabilities for Grok 4.5 and Mistral Medium 3.5, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGrok 4.5 wins on Terminal-Bench, on intelligence and on context window.
Price
Tied
Terminal-Bench
Grok 4.5
Intelligence
Grok 4.5
Context window
Grok 4.5
Key takeaways
who wins on what, from the published numbersGrok 4.5 wins
- Cheaper output ($6.00 vs $7.50 /1M)
- Larger context window (500K vs 262K)
- Higher max output (500K vs 262K)
- Supports prompt caching
- Has web search
Mistral Medium 3.5 wins
- Cheaper input ($2.00 vs $1.50 /1M)
- More serving providers (3 vs 4)
Cheaper overall
Grok 4.5
$2.00 + $6.00 /1M
Larger context
Grok 4.5
500K
More providers
Mistral Medium 3.5
4 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower.
| Grok 4.5 | Mistral Medium 3.5 | |
|---|---|---|
| Input $/1M | $2.00via xAI | $1.50via Mistral best |
| Output $/1M | $6.00via xAI best | $7.50via Mistral |
| Context window | 500K best | 262K |
| Max output | 500K best | 262K |
| Serving providers | 3 | 4 best |
| Date | Released Jul 7, 2026 | Released Apr 30, 2026 |
Benchmarks
Benchmark scores, side by side| Grok 4.5 | Mistral Medium 3.5 | |
|---|---|---|
| Intelligence | 38.8 best | 14.2 |
| Terminal-Bench | 82% best | 51% |
| GPQA Diamond | 93% best | 75% |
| Output speed | 63 t/s | 167 t/s best |
| Latency (TTFT) | 13.52s | 2.21s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Grok 4.5
via OpenRouter
$16
Mistral Medium 3.5
via OpenRouter
$15
Capabilities
feature support, side by side| Feature | Grok 4.5 | Mistral Medium 3.5 |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | — |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, Grok 4.5 or Mistral Medium 3.5?
Mistral Medium 3.5 is cheaper for input ($2.00 vs $1.50 per 1M tokens) from Mistral. Grok 4.5 is cheaper for output ($6.00 vs $7.50 per 1M tokens) from xAI.
What is the context window difference between Grok 4.5 and Mistral Medium 3.5?
Grok 4.5 has a 500K-token context window and Mistral Medium 3.5 has 262K tokens, so Grok 4.5 can take a larger prompt.
How do Grok 4.5 and Mistral Medium 3.5 compare on benchmarks?
On the tracked benchmarks, Grok 4.5 leads on Terminal-Bench, and Grok 4.5 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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