Llama 3.1 405B Instruct
Together AI chatLlama 3.1 405B Instruct is a Together AI chat model.It supports a 4,096-token context window.Input is priced at $3.50/M tokens and output at $3.50/M tokens. Route Llama 3.1 405B Instruct via Future AGI's Agent Command Center for unified observability, caching, and 15 routing strategies including cost-optimized fallback.
Estimate Llama 3.1 405B Instruct spend
Pick a workload, fine-tune the sliders, and see the monthly bill.
Estimate uses $3.50/M input · $3.50/M output. Provider pricing changes. Production costs vary with retries, streaming overhead, and tool-call rounds.
Want this for free? Cache + route via Agent Command Center — first 100K requests and 100K cache hits free every month.
Pricing
Per-token rates, expressed in USD per 1M tokens. Verified Oct 22, 2026.
| Input | $3.50/M | |
| Output | $3.50/M | |
| Blended (3:1 in:out) | $3.50/M Cross-model comparable price |
Context & limits
- Context window
- 4,096 tokens
- Max input
- 4,096 tokens
- Max output
- —
- Modalities
- text
Capabilities
- Function calling — not advertised
- Parallel tool calls — not advertised
- Vision input — not advertised
- Audio input — not advertised
- Audio output — not advertised
- PDF input — not advertised
- Streaming ✓ supported
- Structured output — not advertised
- Prompt caching — not advertised
- Reasoning — not advertised
Strengths & caveats — when to pick Llama 3.1 405B Instruct
Data-driven from Llama 3.1 405B Instruct's percentile within chat peers.
Where it's strong
Watch out for
- !limited context — 4,096-token window is in the bottom quartile; not ideal for long documents or large RAG
- !agentic workflows — no advertised function-calling; use a tool-capable model and route via Agent Command Center for fallback
- !small context (under 16K tokens)
- !strict structured output — no JSON-schema enforcement, expect retry loops
Benchmarks pending
We haven't logged public benchmark scores for Llama 3.1 405B Instruct yet. Have one to contribute? Submit a source — citations help us prioritise.
Call Llama 3.1 405B Instruct via Agent Command Center
One OpenAI-compatible endpoint. Routing, fallback, semantic caching, guardrails, and cost tracking come along for the ride. First 100K requests + 100K cache hits free every month.
agentcc / @agentcc/client). Per-call metadata — provider, cost, latency, cache hit, request id — is returned on x-agentcc-* response headers, so any HTTP client can read it.# Llama 3.1 405B Instruct via the Agent Command Center Python SDK
# pip install agentcc
import os
from agentcc import AgentCC
client = AgentCC(
api_key=os.environ["AGENTCC_API_KEY"], # from app.futureagi.com → Settings → API Keys
base_url="https://gateway.futureagi.com/v1",
)
resp = client.chat.completions.create(
model="together-ai/meta-llama-llama-3-1-405b-instruct",
messages=[{"role": "user", "content": "Hello, Llama 3.1 405B Instruct!"}],
)
print(resp.choices[0].message.content)
print(f"Tokens: {resp.usage.total_tokens}")
# Per-call gateway metadata is returned on x-agentcc-* response headers.
# When you need it programmatically, use .with_raw_response to get them:
raw = client.chat.completions.with_raw_response.create(
model="together-ai/meta-llama-llama-3-1-405b-instruct",
messages=[{"role": "user", "content": "Same call, but I want the headers."}],
)
print("Provider:", raw.headers.get("x-agentcc-provider"))
print("Latency:", raw.headers.get("x-agentcc-latency-ms"), "ms")
print("Cost: ", raw.headers.get("x-agentcc-cost"), "USD")
print("Cache: ", raw.headers.get("x-agentcc-cache"))AGENTCC_API_KEY with a key fromapp.futureagi.com.Gateway docs ↗Explore similar models
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FAQ
How much does Llama 3.1 405B Instruct cost?
Input is priced at $3.50 per 1M tokens and output at $3.50 per 1M tokens (Together AI, last verified Oct 22, 2026).
What is the context window of Llama 3.1 405B Instruct?
Llama 3.1 405B Instruct supports a 4,096-token context window.
Does Llama 3.1 405B Instruct support function calling?
Llama 3.1 405B Instruct does not currently advertise function-calling support. For agentic workloads, prefer a tool-calling-capable model and route via Agent Command Center for fallback.
Is Llama 3.1 405B Instruct good for production?
Llama 3.1 405B Instruct is best evaluated against your own production traces. Pipe traffic through Agent Command Center to compare it head-to-head against alternatives in shadow mode.
How can I route to Llama 3.1 405B Instruct with fallback?
Use Agent Command Center: a single OpenAI-compatible endpoint that supports cost-optimized routing, latency-aware retries, model fallback, and shadow traffic. Configure once, swap models without app changes.
Useful links for Llama 3.1 405B Instruct
Official sources, independent benchmarks, and pricing aggregators — no random search-engine guesses.
Third-party evals — verify the marketing.
Cross-check our number against the rest of the ecosystem.