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Claude 3.5 Sonnet (vision) vs BLIP: Which AI Model Should You Choose?

Pricing, context windows, latency, capabilities, and a one-line code switch — everything you need to pick the right model.

Anthropic
Multimodal
vs
Replicate
Multimodal
Verdict

Claude 3.5 Sonnet (vision) and BLIP are closely matched on pricing and context. The right choice depends on your specific workload — see the table below for the full breakdown.

Side-by-side specs

SpecClaude 3.5 Sonnet (vision)BLIP
ProviderAnthropicReplicate
CategoryMultimodalMultimodal
Input cost / 1M tokensn/an/a
Output cost / 1M tokensn/an/a
Context window200K tokens—
Max output tokens8,192—
Avg. latency——
FeaturedYesYes
New——
Capabilities
text
image
image
text

Pricing example

A typical chat workload of 100,000 input tokens plus 50,000 output tokens.

Claude 3.5 Sonnet (vision)
n/a

100K in × n/a + 50K out × n/a

BLIP
n/a

100K in × n/a + 50K out × n/a

Switch in one line

Both models live behind Railwail's OpenAI-compatible endpoint. Replace the model string and you are done.

JavaScript / TypeScript
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.RAILWAIL_API_KEY,
  baseURL: "https://railwail.com/v1",
});

// Before — using Claude 3.5 Sonnet (vision)
let r = await client.chat.completions.create({
  model: "claude-3-5-sonnet-20241022",
  messages: [{ role: "user", content: "Hello" }],
});

// After — switched to BLIP
r = await client.chat.completions.create({
  model: "salesforce/blip",
  messages: [{ role: "user", content: "Hello" }],
});
Python
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["RAILWAIL_API_KEY"],
    base_url="https://railwail.com/v1",
)

# Before — using Claude 3.5 Sonnet (vision)
r = client.chat.completions.create(
    model="claude-3-5-sonnet-20241022",
    messages=[{"role": "user", "content": "Hello"}],
)

# After — switched to BLIP
r = client.chat.completions.create(
    model="salesforce/blip",
    messages=[{"role": "user", "content": "Hello"}],
)
cURL
# Before — using Claude 3.5 Sonnet (vision)
curl https://railwail.com/v1/chat/completions \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-3-5-sonnet-20241022",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

# After — switched to BLIP
curl https://railwail.com/v1/chat/completions \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "salesforce/blip",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Which one wins for...

Quick verdicts derived from public specs. Always validate on your own workload.

Coding
Claude 3.5 Sonnet (vision)

Higher coding category match or larger context wins.

Writing
Claude 3.5 Sonnet (vision)

Bigger context window helps maintain long-form coherence.

Long documents
Claude 3.5 Sonnet (vision)

The larger context window is the deciding factor.

Vision
Tie

Multimodal/vision support is required for image inputs.

Real-time chat
Tie

Lower average latency wins for interactive UX.

Cost-sensitive
Tie

The model with the lower input-token price wins.

Frequently asked questions

Which is cheaper, Claude 3.5 Sonnet (vision) or BLIP?
Claude 3.5 Sonnet (vision) and BLIP cannot be compared on per-token price: at least one of them has no per-token price listed (it is priced per run or not yet priced). See each model page for its current price.
Which has more context, Claude 3.5 Sonnet (vision) or BLIP?
Claude 3.5 Sonnet (vision) has the larger context window at 200K tokens, compared to — for BLIP.
Is Claude 3.5 Sonnet (vision) better than BLIP for coding?
For coding-heavy workloads we lean toward Claude 3.5 Sonnet (vision) on this comparison — it scores higher on the relevant heuristics (category, tags, or context window). Both models are usable for code via Railwail's OpenAI-compatible endpoint, so the safest path is to A/B test on your own prompts.
Can I use both Claude 3.5 Sonnet (vision) and BLIP via Railwail?
Yes. Both Claude 3.5 Sonnet (vision) and BLIP are accessible through a single Railwail API key and the OpenAI-compatible /v1/chat/completions endpoint. You only change the "model" parameter to switch between them — no SDK swap, no separate billing.
How do I switch from Claude 3.5 Sonnet (vision) to BLIP?
Replace the model identifier "claude-3-5-sonnet-20241022" with "salesforce/blip" in your request payload. Everything else — API key, base URL, request shape — stays the same. See the code example on this page for the exact one-line change.

Try Claude 3.5 Sonnet (vision) and BLIP side by side

One API key, one endpoint, both models. Start free — no credit card required.

Get Started FreeView Claude 3.5 Sonnet (vision)View BLIP