llama-3.1-70b-instruct vs sonar-pro
llama-3.1-70b-instruct is 3.0× cheaper on input than sonar-pro.
| llama-3.1-70b-instruct | sonar-pro | |
|---|---|---|
| Input / 1M | $1.00 | $3.00 |
| Cached input / 1M | — | — |
| Output / 1M | $1.00 | $15.00 |
| Context window | 131K | 200K |
| Max output | 131K | 8K |
| Provider | Perplexity | Perplexity |
| Vision | No | No |
| Tool calling | No | No |
| Token count | estimated | estimated |
Capability for the money
Independent measurement · Artificial Analysis · read 2026-08-11Not the same tier: sonar-pro leads llama-3.1-70b-instruct by 16.9 points on hard reasoning (GPQA Diamond), for 6.0× the price. They are level on coding (LiveCodeBench), so the premium only pays off on hard reasoning work.
Coding
writing and fixing code
LiveCodeBenchsonar-pro +4.3
Hard reasoning
graduate-level science and multi-step analysis
GPQA Diamondsonar-pro +16.9
Averaged over the benchmarks both models sat, llama-3.1-70b-instruct returns 32.0 points of pass rate per dollar of blended price against 7.1 — the ratio that decides whether the dearer model earns its rate.
Each figure is a pass rate: the share of that test set the model answered correctly, measured by a third party rather than self-reported by the lab. Rows are different tests of different difficulty, so compare a model against the other model, not one row against the next. No published following instructions or tool use score for one of these models, so those lenses are omitted. And a benchmark is not your workload — it narrows the shortlist, it does not pick for you.
Which to pick
- Cheaper input: llama-3.1-70b-instruct
- Cheaper output: llama-3.1-70b-instruct
- Larger context: sonar-pro
- Better at coding: sonar-pro (23.2% vs 27.5% on LiveCodeBench)
- Better at hard reasoning: sonar-pro (40.9% vs 57.8% on GPQA Diamond)
List price is not production cost. Output length, cache hit rate, retries and task quality move the real number more than the headline rate does — price your own prompt on the token ledger before deciding.
Related comparisons
llama-3.1-70b-instruct detail · sonar-pro detail · All Perplexity pricing · All comparisons